I'll ask you what size grit you used for the bottom of those boats you
say you've done?

To which job, Thom? We used chemicals (A gell remover I don't recall at the
moment) with faired paint scrapers to remove most of the paint from a few
boats, then finished with 220 wet to bring the gel back. Final step is the 3M
paste and wheel on the grinder at low-moderate speeds. It was a lot of work,
but it really came out nice.
As for the boat bottoms, I'm done doing that. It's a really unhealthy job and
my yard is cutting me a good deal. We used to make the long sanding boards as
well. Backbraking nasty work, especially for someone as tall as me.

RB