http://boatbuildercentral.com/prodde...=LM_9443_1%2F4

Use this to bed the to the tank. Also epoxy coating it will insure a longer life of the tank. Etching primer will be needed to bond correctly .

Boat looks good and clean work makes it easy

Thanks for the tips guys. I plan on etching then epoxy coating the tank. I wanted to use foam in a couple spots to kind of secure the tank a bit more than just the fasteners but scratch that idea I guess. Is the foam bad because it traps water against the tank?? I am also wondering how to ground the tank and boat? Should all the grounds (batteries ect.) and tank be connected?

Check out Dave Pascoe's article on how to install gas tanks if you haven't already read it - it's been posted on here many times.

Regarding grounds and bonding systems, check out the "Grounds & Grounding", "Bonding Systems" and "DC Systems" sections Pascoe's article on electrical systems. Some folks don't necessarily agree with every thing he writes, but I've read a couple of his books and many of the articles on his web site and he seems to have a lot of first hand experience with most of the stuff he writes about!

I would just ground the tank to the fill for safety against static spark when filling.

grounding system on a 20fter is a little excessive. I have seen stray current at a marina destroy a lot of stuff in boats that were bonded and grounded. that otherwise would have been fine

If I were to cut out the transom for a 25" motor would the cutout be 25" above the keel? I am contemplating scratching the hermco bracket idea...

We did mine at 26.5" with advice from others on this site as well as the glass guy that helped put in my transom.

This^^^

Cool thanks for the info!

Definetly go at least 26.5 inches. Been there done that at 25 inch and I'm in the top holes still

So trying to decide which arjay product to use to bond the floor to the stringers. The core bond is polyester based and seems like it will do the job. The vinyl ester is a little more expensive and I'm just wondering if the extra money really needs to be spent.