Figured out I was going to have to sand off the epoxy. First off I pulled all the through hull fittings, brackets, and trim tabs. Most came easy, but the bait tank drain on the transom would not budge. After more time than I will admit f-ing with it, I took a diegrinder and punch to it and had it off in 5 minutes.
I spent mucho time researching sand paper and found the right one. 3M makes good stuff and along with the 3 gazillion other things, they make these:
3M calls them Clean Sanding Discs for Composite Finishing 360L. They work! I went with P500 for the epoxy and P1000 to knock down the scratches on the entire hull. Picked up a new Bosch 5" DA sander with the hook and loop pad. This sander comes with an attachment to hook up a vacuum and it plugged into the Shop Vac just right. This system works good. I wore a mask when sanding but you could get by without one. It is that clean. The pads dont load up fast either.
Working from left to right, here is the epoxy coming off:
Followed up sanding with Marikate On/Off hull cleaner to take off the staining.