Pond Boss Forums Thread Like Summary - Help me build a sign

Since we are starting to back-up water in the new pondsite, I feel compelled to "send a message" and protect myself from liability. I want to create a sign with brief but poignant verbiage that I can locate at strategic areas of the pondsite.
We have about 6 neighbors that border our 44 ac parcel. Some of them have young'uns. We also know that our property (and surrounding) is popular for mushroom'ing. I suspect that I get many visitors when we are absent; popularity based on the time of the year.
I have no problem paying for a half dozen or so nice aluminum (or plastic) signs, custom made to meet the need. I want to address "no trespassing" and all the possible poacher uses of the water feature (ie; fishing, swimming, wading, ice skating, etc). I don't want a laundry list of "do not's" on the sign.
Here is where I am starting: PRIVATE PROPERTY, NO TRESPASSING. DANGEROUS WATER.
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C'mon, kick back some good "right to the point" stuff that will help to send the warning AND help to cover my butt legally.
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I found a gazillion custom sign makers on the www. Does anybody have any practical experience?

northfisher, we have had a MUCH more recent thread (within the last year) on trespassers, signs, and fencing you should look for.

That being said, it is wonderful to see this thread again. Good times.

One more DD attribute I strive to achieve.