Another caution about DIY home-quality flooring applications
Tim, as I have said several times before in these boards, home-quality flooring materials are patently unsuitable for boats; so I will worry about the plywood underneath what you put down. Maybe the rubber won't trap moisture between it and the flooring material, but it will between it and the plywood below. This moisture will then rot out the plywood. This isn't an 'if', it's a 'when' (and will be much sooner if your boat is kept where it's warm and/or humid). The only possible way to reduce this likelihood is to have put down the flooring material, whatever its included backing, with a marine-quality bedding compound like 5200 (or West Marine's new '8200') or else WEST-type epoxy. And as I always say, silicone is NOT an adhesive and doesn't keep out water from joints in boats, only drafts of air under sash windows. ('Silicone has no place in the marine environment-- only the bathtub environment' --Dave Cherubini.)
I really hope you will watch this over the coming years. I'm sure a lot of people will claim, 'Well, that's the next guy's problem', but with VERY few exceptions we Cherubini Hunter owners are all the 'next guys' of our current boats and we know what we've had to deal with from POs. My whole cabin sole was rotted and that was because the FACTORY sealed marine plywood with polyester resin, which does as I have said-- traps moisture between it and plywood that's otherwise prone to become damp. The result was a lot of grinding and 'glassing and installing of new wood with-- you guessed it-- WEST epoxy. If the original cabin sole lasted 25 years till it came apart like wet soggy cardboard in my hands, the new floor (which is not even marine-grade) should last about twice that. There will very likely be NO 'next guy' for this boat, and I certainly won't be around to care by AD 2049.
I mean this sincerely-- good luck.
JC 2