Re: Herculiner in a 12' aluminum boat?
If you are doing it to seal leaks then no, the correct way to that is to rebuck the rivets then the leaks are actually gone instead of having a band-aid on them.
Get it on some saw horses and get SOME water in it and mark all your leaking rivets then get a freind, wife, girlfriend work also, one gets outside with a hammer one inside with a hammer, inside guy holds the hammer on the rivet while outside guy smacks it a couple times.
Do this to each leaker and the boat will be water tight in no time and thr eason I say SOME water is because it is very heavy and you don't want to actually fill the boat, 2''-3'' is fine and just put something under one side at a time to get the sides, you only need to check what is below the water line.
AS far as the bed liner for looks it is pretty heavy and will have to be subtracted from your load capacity and also if anything happens to the boat that you would need to weld it or anyhting that is out because the liner won't come off and the liner itself is hard to repair if it gets damaged but in the end it is your boat and you can do anything you want with it.
They make a product called Gluvit that is suppose to seal leaks but here agian it is a band-aid fix in my opinion.