Vince, Here's how Vic Kuzmovich, head of of Naiad Florida and a very savvy guy, told me to measure alignment of the fins: "To check alignment, center the fins and take your measurement from the aft upper corner of the fin to the keel, then measure from the forward upper corner of the fin to the keel. The measurement on each side should be within 1. Both fins should be parallel with the keel. Measurement from side to side may vary." With only myself in the water, I found it best to use a rigid rod to do the measurement. Judy was in the cockpit to measure the rod and record the measurements for me. What a team! --Milt Vincebirleson@aol.com wrote: If it is short, what is the method to check fin alignment.