I did the rosarita beach race years ago,it was a BLAST.If parts of it are literally where the break water is, always try and get as close as possible to the water without hitting it(if you hit the water going fast say goodbye),the sand is harder right at the break.Besides that,drop a couple of teeth on the rear sprocket cuz the rear wheel spins ALOT more in sand and you don't want to be shifting every half second.Lower the forks so the top of the fork cap is level with the top of the triple clamps to lengthen the wheel base as much as possible,and on that same note if you really want to go all the way on a longer wheel base, you can get a longer chain and use all of the chain adjuster on the rear wheel(a cheaper but not as good way is to add another master link or two if your at the shortest end of the adjuster right now).Stiffen (front and rear) your suspension quite a bit and reduce the sag on the rear a bit.Stay back on the bike a lot more,and try and stand up as much as possible.You don't have to brake NEAR as much,deep sand is a huge braking Ali,and as Psyco said stick with the rear not the front! Staying on the gas is the biggest tip in sand, if you start getting out of shape nine times out of ten gassing it harder:scream: will save you.STAY BACK AND PIN IT!! Have fun!!!