You'll have to experiment, but I'd think it'll get heavy fast and pretty stiff depending on glass weight and amount of epoxy. Having said that, don't discount using vacuum as it can be done very cheap and the results for your application has the potential for being outstanding, if you use release cloth,etc. Just try a small piece and make sure you use laminating resin and not too heavy glass (2 oz, maz, as a guess). I'm curious how this works since I want to do something similar, but not with boats. If I get some time, I'll try and experiment some. Other house projects in way, though...