I belong to a dualsport club here in Michigan, there is quite a bit of deep sand on some of the loops we ride. Some of the guys are riding with some what I would call incredibly low air pressures. One was using 3 psi in the front and 6 psi in the rear. Others were running pressures a bit higher, but many were running more pressure in the rear than the front. Several years ago I had an XR650L, I struggled with the handling in the sand, but halfway through the ride I developed a flat in the front, I couldn't believe how well that thing carved the sand on the way back home. Almost to the point where I almost was ready to pitch the tire and run the bare rim. I have always run more pressure in the front than in the rear, in general 15/12, but is this guy onto something? I asked if he took any precautions, like using a tire sealant, but he said he just uses heavy duty tubes????