Use Marine-Tex instead of JB Weld or Bondo. The stuff lasts forever, even under water and it can be sanded and painted just like body filler. There's no point in paying somebody else outrageous sums of money to smear on filler and do a little sanding and painting.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!