Re: 1/8" or 3/16" Aluminum Diamond Plate Floors?
I've put aluminum DP floors in several boats, so lets get rid of some of the misconceptions. It is not slippery, the traction is very good, and nothing is needed over it. It does not turn into a frying pan in the sun, it will get warm, but will be much cooler than dark gel coat. The glare when new can be a hassle, but it will soon lose its gloss and isn't a problem anymore.
1/8" works well, extra support is needed and it depends a bit on the design how close the spacing needs to be. Velcro works very well to hold it in place, get the long rolls of industrial stuff, no rattles, no screws or rivets backing out or breaking, and it can be pulled up easily.
I put one in a 20’ Alumaweld sled, so it will work the same in the Wooldridge.