There is a fun regatta just north of Columbus, Ohio the first weekend of May put on by the Ohio Catamaran Racing Association (Alum Creek). I sailed it last year and we got 8 races on Saturday and 3 on Sunday! I don't know how long to get to Columbus, but it might be less than 7 hours. Last year the fleets were F17 (7 or 8 boats), M4.3 (7 or 8 boats), and open (a variety of Hobie 16s and 18s, 1 or 2-up). There were 2 starts split by D-PN. The F17s started with the N20 and I think everyone else was in the first start. The races were short but provided an ideal setting for the 1st regatta of the year...lots of starts and very little waiting around. If you want to practice and get tuned up for the season, this could be the ticket. I highly recommend this regatta for its timing and the great fun!