I did glue my neoprene strips down to the coffin floor vs the bottom of the new tank first because I have raised pads on my Grady, and the contours were not the same. I wanted the tank to be equally supported on all of them, so I made the "executive decision". Had the pads not been there, I agree gluing the 5200 and spacer material to the bottom of the new tank would be the best route.
Ah, I understand better, now. The mounting surface was essentially uneven so the neoprene helps to take up the irregularities. That makes sense. I'd probably still be worried about possible crevice corrosion since there's no way to fair the 5200 between the neo and tank. Of course... trying to remove that tank down the road... since it's now essentially superglued to the hull... yikes!
But that's neither here nor there at this point. Good luck!
What thickness neoprene did you chose? What about bulkheads? Hard to see in pic.
Keep in mind that Lee already has something built-in to raise the tank off the floor for air circulation which, again, is the primary reason. Using JUST the neo, in your case, would not be good.
Note on using "plastic" spacers: Yes, some plastic is not the best because glue doesn't stick to it well - HDPE, for example. But "plastic" is a very broad term and there are plenty of them out there that would MORE than serve the purpose - I gave one example above.
Fuel
