I am fiber glassing the new top side deck and will have non skid Monster paint leftover. I'm worried about using that because it might trap dirt and will mildew. THANK YOU!
there are many cleaning solutions, both commercial and home made, specifically for aluminum...
The real pros on aluminum will be along shortly to help you out...
As far as sealing the insides, the one product i see used constantly by all the aluminum boat owners is called "gluvit"...
It is available here...gluvit - iboats
good luck and have fun!
Gt1m