The USAC insurance is only $125. Might as well, its cheap enough and you get 1mil coverage.
I disagree about not charging a club due. You have various costs of running a team, like USAC registration, insurance, etc. Plus I believe that if you pay a due, you feel more motivated to do things with the club, since you paid for membership. Unless you have a money sponsor, all of this would be coming out of your pocket.