Hi again Robbin, Sean has been there, done that. But you probably know that from following this BB list for years. My personal experience with Interprotect 2000 is that is a great barrier coat, seals well, and I have never had any blister issues after using it on my M17. If memory serves (without looking at my records) I did six coats in 1997. I followed with Micron CSC. Bones Both boats on their trailers for winter. ____________________________________________________________ Globe Life Insurance $1* Buys $50,000 Life Insurance. Adults or Children. No Medical Exam. http://thirdpartyoffers.juno.com/TGL3141/4cc500a0beb4f47309ast05vuc