I've done it a few times, and aluminum diamond plate is an upgrade on boats built around here. There are many myths spread by speculators as to what an alumuinum floor would be like, but I'll give you my experience with it.
It's not hot, it can get warm in the sun, but it's never been an issue. It can be cold in the winter, but since I wear shoes or boots it's a not a problem, if you go boating barefoot in the winter you have other things to work out.
Too much glare, well, when new some types have a high gloss finish, this goes away after a short time on it's own, or you can scrub it with an abrasive, either way it's a short term annoyance.
Slippery, nope, rather good traction actually, even non diamond plate isn't as bad as you would think.
It does need extra support, the thinner you go the more support it needs. I've put it over wood and aluminum supports, either way works well.
The best method of holding it in place is Velcro, the peel and stick stuff works very well, just buy a roll on eBay.
The cost is higher, but it's a one time expense, you will never need to replace it.
Since you will go as thin as possible it's easy to cut and handle.
Mounted correctly there is no rattling. Again, Velrco is your friend.
Very easy to clean
I wouldn't hesitate to put an aluminum floor in a fishing or work boat, but for the bikini clad crowd it may not be the surface of choice.
