Why all the two day races? Its been a few years since I've raced, I was thinking about getting back in, but the two day format makes it very difficult and expensive.
Ok thats a few hours way, I know the area you are talking about. I go up that way all the time. Here is our groups facebook page:
https://www.facebook.com/groups/513840005430966/?ref=bookmarks
I have always kept my 2.4 antennas in side the radio box and never had a problem, I don't even think tacic recivers have antennas anymore, only exception may be the spertrum marine receivers with the dual antennas.
People who race only make up a small section of the boating hobby, I have seen a lot of people worry about something not being impba legal vs helping a person out. For example on a forum someone asked if a certain motor would work good in a cracker box. One of the first comments was, that is...