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I think what you're talking about is a pre-fab aluminum dock/pier system. I have never worked with Wickcraft, but I have worked with Shoremaster which is similar, from what I can tell from their website. Looks like they're out of Madison, Wis. Basically, the system is prefab frames of a manageable size that have sleeves in the corners that accept legs that go down in the water. You put the legs in and tighten a setscrew to determine the height of the frame out of the water. Then the decking is typically a prefab crisscross, usually 2 per frame section, that you just drop in place. These crisscross pieces usually weigh about 40# each and might or might not get screwed down, depending on how predictable the water level is; but even if they did it would be just one screw in each corner. In Maine we leave those sections free so they can float away when the water comes up (or with composite they just stay put because it doesn't float).
Hope this helps.
Marty
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