This is a common problem on the old style rudder cams on the TheMightyHobie18. They are not designed to kick up when striking something. I broke a couple of castings on my previous TheMightyHobie18 because of this. If the cams are lubed well then they lock down too easy. When you release the rudders as you approach the beach they can very well slip back into the locked possition. My suggestion is to get the upgrade to the kick up style. The kits can be obtained from any Hobie supplier and maybe from Murrys or Sailing Pro Shop.
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<br>Good luck
<br>Clayton
<br>H20, H16<br><br>