I'm in the minority with my choice of epoxy. The most popular choice by far, both here and at classic mako is Coal tar epoxy by Rustoleum. Most guys swear by it. I was going to let the tank breathe like Pascoe suggests in his tank mounting instructions on marine survey. com, but since I had the minor pitting, I chose to coat it. Hopefully, I won't know the real results for 20 or 30 more years.