You're right.... locking both front and rear diffs kills a tight turn radius. two easy options are to leave the front diff open (not good for real crawling) or go with 4 wheel steering (not comp legal). Other than that you can get aluminum axle "C"s, trim the Knuckles, and there are some CVD's coming out soon. Those 3 things would give you back the lost radius and then some. At slow speed, and on the rocks, the reduced turning radius is not too bad, you just have to plan your moves a little more carefully.