I think you look just fine. I have been a "sailor" (several sailboats over the years but none now) but have not sailed in a kilt. The only change I would probably have made is to scuttle the sporran. Boat shoes (Sperry's?) without socks is common and I don't think it looks odd with the kilt, especially on the boat. I think the only other thing I would wonder about is how a kilt would behave on a close hauled tack with the wind just off the starboard bow? Anchors aweigh!