one other tip. always make sure the buffer is rolling off the edges. for example, when buffing along an edge make sure that right side of the buffer is the only part touching the boat . if the wheel rolls into the edge you will burn the paint/gelcoat for sure. as far as cleaning the bonnet goes i have never tried the wire brush but a screwdriver will do the job. they also sell a spur for this. if ur feeling realy ambitious you can get a foam egg crate style wheel and finish her off with a little 3M fine grit polishing compound!
looks good B_L great job