Someone earlier in the thread mentioned using a solid fiberglass nose protector, and I remembered reading some interesting comments on the www.boardlady.com
website regarding solid vs. soft foam protectors [ check under 'Miscellany' ]. I think you should have a look before gluing a solid protector on your board.
Uncontrollable, violent catapults are fun aren't they, they mostly go away after a while though. I bet they will be a thing of the past after your up coming solid year of windsurfing.