In Sarasota they had us cats on the course with 420s. The parent boats would often park in front of our start and perenially get in the way, putting themselves and the 4-5 boats rafted up to them in danger, especially when we're hauling DW with the chute up. I don't think they should be banned or anything, but there should be an area for them to stay in off the course. They should leave the area during any race and when the first 5 min gun sounds. They just have too much of a knack for hanging in the starting area. It's probably only a problem in mixed fleets though.