Well I apreciate all the comments, well most of them at least. I'll be mounting a stainless bar on the bottom of the keel to block the notch over the winter. As far as the comments about dodging the pots- I often sail single handed so posting a crewmember at the bow is impractical- seeing them is not always easy in my area where some logic challenged lobstermen have chosen black and green buoys which are nearly impossible to see in nasty conditions. Also in my experience a lot of power boaters don't really try to avoid the pots, leaving buoys bobbing in their wake ( at least those of my friends with big enough boats not to worry about tangling their prop).
Anyway thanks for the replies.