my boat's old...1977. bought it 4 years ago and never waxed hull. has
chalky residue on surface, so i want it to look good. have to get rid
of chalk before i wax it...so

-best way to do this (buffer on a drill, etc)
-material to use
-minimum work
-how long does it take (26' boat)
-best wax (single coat)

any hints, etc? thanks much