How tough was the anchor system to set up?
Whatever the answer here, it would only be once, as i am sure you would do, they just put a milk jug on the line in the winter to keep the anchor line easily accessible. Just make sure that people ice-fishing know where they are so they don't snag the line.........
How BOUNCY is the trampoline?
Very....if you use it right. I weigh well over 200 lbs and it can throw me a good 10 ft straight out into the center of the pond. It took some getting used to...like n8ly says, they don't throw you very high- but 10 hours of "let's do it again, uncle mike!" and you figure out how to hit it just right to chuck you out into the water. if it is getting used, splash some water on it first....it will help your feet, knees etc from getting cut up on the slightly rough tarp.
How hard is it for kids to climb back on?
Easy. I have seen my 6yo nephew get on and off the thing many times in very little time. Some have plastic, like pvc, almost, ladders that go up the side, which makes it even easier. I also don't think it would be hard to fabricate a ladder.
How durable is it?
Like i said, there is one out there that gets heavy use and has been out every year for 7 years. I would call that durable. I bet it is a case of you get what you pay for.
How long to set up/take down?
I have seen the neighbor north of my dad do his in about 3-4 hours to set up, and it didn't look like he was trying very hard, just hooked an electric air compressor up to it, made sure everything was unfolded out of the storage container properly and there it went. I am sure there was some wrangling to get it hooked to the anchor first.
If you don't mind...THANKS Mike!
no problem.

How tough was the anchor system to set up?
easy as pie. drop a few cinderblocks with a rope or vinyl coated chain attached (enough weight that the wind hitting the float won't move it), keep a float on the thing in the winter so you don't lose the chain/rope, and you are all good. attaching the anchor to the float takes about 2 minutes, although the first time was tricky to learn (says both of the owners)
How BOUNCY is the trampoline?
from personal experience, it depends on your weight. Looking at my experience critically this time, the most that it shoots you out into the lake depends more on your ability to jump that far than the trampoline actually throws you. Young ones, though, seem to have an awesome time with it, and can propel themselves much farther than they would be able to jump unaided.
How hard is it for kids to climb back on?
I watched several age groups do it repeatedly. the youngest (4) needed a boost up the ladder near the end as he was starting to get worn out (as they do). All in all easy breezy, lemon cheesy. A pvc ladder on the more expensive model and a rope ladder reinforced with plastic tubing (I think this one may have been homemade) on the cheaper one both were adequate for all children to use.
How durable is it?
I you get what you pay for. the owner whose trampoline had been in use for now the 8th summer was very proud of the fact that he had purchased the better one, and it lasted. However, he did say that the seals break around the grommets that hold the trampoline to the float. there is a seal kit you can order to solve the problem, and he recommended that since they are prone to breaking (when one breaks he did all of them at once), it is better to slit the trampoline open, re-seal it from the inside at those weak points, then put the patch (from the seal kit) on the slit you made to gain access to the interior of the float. His fix has lasted 3 years without a hint of deflation.
How long to set up/take down?
Minutes. you unpack it, lay it out in the sun (to fight mold issues, i suppose), then you hook your wetvac up to it to fill it up (best to do this while in the water, owners did it at the end of their docks). 2 minutes to inflate, Once inflated 5 minutes to affix the trampoline to the top, one minute to tow it out to the anchor with a rowboat (with someone else swimming out to it), 2 minutes to get the anchor affixed to the bottom.
If you don't mind...THANKS Mike!

I have seen the neighbor north of my dad do his in about 3-4 hours to set up, and it didn't look like he was trying very hard, just hooked an electric air compressor up to it, made sure everything was unfolded out of the storage container properly and there it went. I am sure there was some wrangling to get it hooked to the anchor first.

Alright all, sorry i haven't gotten to this question again since getting up to see it in use.

N8ly (as usual) is very right. It won't throw you as far as you would expect a trampoline to do, but it will throw a child. After his post, i totally agree, that the inflatable float does suck up a large portion of the bouncing that will throw you very far.

However, that being said, the kids have an awesome time with it, and for some reason it sends them absolutely flying. I bet that the fun in playing with the kids on the thing tainted my original nothing-but-good-things-to-say diagnosis. Now that being said, with as much fun as the kids had, i say it is totally worth it.

There were 2 owners who i asked the questions of. They both had the "Rave" brand, or model or whatever it is. One, though, spent the extra hundred bucks or so to get the thicker model. As was stated earlier, you do get what you pay for. As you can read in the reviews the price difference comes in one model being a certain mm thickness, the thicker one being the one that has been on dad's pond for years, the thinner one being newer, was not staying inflated the one day we saw it in use. Buy the more expensive one if given the opportunity. His has been in perfect working order for over 7 years. He has had to repair one grommet (but re-sealed all of them when he had to repair this one) with a sealing kit you can buy from the distributor online.

Hope that helps in any way.

Mike