From the IJSBA website;
Body Beach is closed on Wednesday or Thursday.  Here it is, just a week  ahead, and we are still hearing conflicting stories of when Body Beach  will be closed to accommodate a boat drag racing event.  Most of the  reports say it will be closed on Thursday, October 11. It is a royal  bummer that it is closing, at all, but there really isn’t anything  anyone in the watercraft family can do about it,  So, lets just be sure  to show how compliant we can all be and what good stewards of the lake  that we are and lets just play the cards we are dealt.  We are guests in  Lake Havasu City and we want to be good guests by following the rules  so we can be invited back.
http://www.ijsba.com/2013/10/05/final-2013-pre-hot-products-world-finals-update/