Thanks. That sounds much easier than a 6x6. How did you transfer the load from the rim joists to the pipe?
The pier is 66' long, heres a partial pic of it.
Here's the other half...
I'll take a picture of the brackets tomorrow. Basically it's a clamp that clamps to the vertical pipe, and has a horizontal hole thru it (offset) so you can slide a piece of 2" dia pipe thru it horizontally. We cut the horizontal pieces of pipe 1" narrower than the joists that run the length of the pier. Used 3 joists, the outer ones overhang the horiz piece of pipe by 1/2". We drilled a hole thru the bracket and the horiz. piece of pipe and put a 16d nail in it, to stop the pipe from walking to one side or the other. I have no idea where to get those brackets today, they are probably 50 years old.......
We used 20' long pieces of pipe to make the boat hoist. Washed them into the lake bottom, then slipped 3" pipe over the top of them to make what you see in the picture. Electric runs out to the end of the pier, and we made a electric hoist. Strong enough to keep the Mastercraft out of the water.