Nathan, that looks like the filler has cracked where the cone was put on. Does not look like structural damage? Grind/sand the cracked stuff out, replace with marine tex or go back with the bondo. Sand smooth, paint flat black, have a cool barley pop and go fishing Probably less than 25 bucks total. Had the same thing twice on a Bob's cone I ran. The filler cracks all over, but the weld where it was attached and LU was still good.
Hate to see it, hope your Grrfren wasn't with you. The embarassment would be worse than the damage