I've never used anything but air-egress. The whole "water under the wrap" is a load of crap if you do it right. The only time I've used non-air-egress was an installation only job on a bass boat for the FLW. What a nightmare. The 38' Scarab we just did was done on Avery 1005 EZ (not the EZ RS). That's what Avery recommends for boats because of the higher tack level on fiberglass. Avery approached us regarding needing a boat to wrap for an upcoming article on boat wraps. When I was asked if I had anything I said yes we had a 38' Scarab coming up. They donated the vinyl and lam (1060) in exchange for a whole heck of lot of installation photos and tips. Along with their logo on the boat. My customer didn't mind the discount that came with the offer so we did it. Both sides and both top pieces aren't seamed, they're done in massive pieces. We got lucky because the boat was pretty close to stripped (cleats, snaps, etc). All the major pieces are done in one long piece. Yes, it's heavy and you'll need min 2 people, 3 would be better with a boat this big. Boats are like rotini noodles. Not only do they twist under they also curve in toward the front. Take your time lining up what needs to be lined up. Start in the back. And make sure the vinyl doesn't drop down as you move forward. You'll see what I mean when you get going. On the flip side. Don't get crazy with trying to keep it up, because you'll over compensate really quick. Along the bottom make sure you trim up 1/4"-1/2" and Edge Seal the heck out of it. Edge Seal all exposed edges from the rub rail down. I always stop the wrap at the first edge before the boat starts going under and then trim up from there. I've seen wraps (especially on bass boats) go under the boat. I personally wouldn't do it. If you're gunna have any text or logos, etc I recommend doing an overlay like we did on the Scarab. It all comes down to the twist in the boat. And, any where the vinyl might come in contact with the interior be very careful trimming. (think cockpit or open bow). Every bass boat I've done had to be lifted off the trailer with a floor jack as well. So keep that in mind when bidding. Again, my number is 909-822-4400 call me if you have any questions.