You've done a very nice job on your boat! Been there and done that, means I know how much
hard work goes into such a
project.
I know I'm late on this for your
project , sorry I just joined here.
Instead of
sanding anything
wood, have you ever considered the use of a very strong
paint remover? This takes maybe 1/10th of the time compared to
sanding, does not remove any wood and leaves a perfectly
paint prepared surface. Let's not even mention the mess/powder/cleaning sanding leaves behind.
After the old paint has been removed all it takes is
steel wool to clean the surface, voilà.
Once I discovered ( by case ) that paint remover can be used on wood, I've used this alternative in several projects with I would dare to say better results that sanding.
Maybe this will help someone else in their future projects?
Loredo