There are so many brands and types of botom paint
the only thing to do is follow what the manufacturer says to the letter. Some can be painted over with almost anything, others can only be painted over by the same brand and type of paint
One of the popular bottom paints in my area is VC17, you can only go over it with VC17. If you want to change to something else it all has to come off.
That is not an endorsement I don't use VC17, personally didn't want to make the commitment or face stripping the bottom. The racers love it, it can be polished....I don't race
As far as a generator
- do you need power where there is none? I have a gene for work, can honestly say I've never taken it to my boat as there is power there. I'm assuming you mean while you're working on the boat as your questions are all about maintenance
Question 4 - That depends where you are doing the work, some places you can't sand anything without all the enviro stuff, other places have at it who cares, wear a respirator though either way. I may have read that in California
only specialized companies can remove bottom paint
As far as the pads, the product you are applying should tell you on the package which pad to use and detailed instructions on rpm
etc, best to follow their suggestions.
I don't think the sell drillmaster in Canada
, can't recall
ever seeing any of their tools ever at work or just looking at tools in stores. I think we have something like Jobmaster(?) may be the same?, typical home owner grade tools, wouldn't expect them to last long on the job 50 hours a week, couple times a year on a boat probably last.