I just read the accounts of Potters turning turtle and as I am new to sailing a smaller center boarder a couple of question came to mind. 1. Does anyone know of an M15 or 17 turning turtle? 2. Apparently the Potters have some form or center board down locking mechanism. I can understand why this would be important so why do the M's not have that capability? Is it really important? 3. My experience with a center boarder is on a 30 footer with a very heavy keel. I used the center board at about half on a reach and only dropped it all the way when beating. Running it was up. The Potter accounts sound like they felt that the board should be locked down at all times. Is this correct on the M's? On another note, I am considering removing the foam blocks from under the bow to expand storage space. I read the postings on this and couldn't conclude if this was a bad idea. Opinions? Thanks for your time and experience, Dave Rossi M15-197