I went through a similar process creating an anchor locker on our 16C (pictures in album). A few things that I discovered:
1. As I carved out the foam, I kept my shop vac in the compartment, running. Had very little mess elsewhere and did not have to fight the static build up.
2. Once I had it "roughed out", I used a random orbital sander to smooth up the foam I was leaving in place. Be ready to move, it removes foam quickly!
3. West System and glass cloth worked excellent to hard surface the remaining foam. The bottom of our locker is glassed foam and shows no wear after a full season of use.
Hope some of this may be helpfull to someone.
1. As I carved out the foam, I kept my shop vac in the compartment, running. Had very little mess elsewhere and did not have to fight the static build up.
2. Once I had it "roughed out", I used a random orbital sander to smooth up the foam I was leaving in place. Be ready to move, it removes foam quickly!
3. West System and glass cloth worked excellent to hard surface the remaining foam. The bottom of our locker is glassed foam and shows no wear after a full season of use.
Hope some of this may be helpfull to someone.