Originally Posted by Blade&Shaft
I have no idea what that means, but from your profile pic, I guess it makes sense...
When you mystery move, you submerge out of site and reappear downstream.
When done on an eddyline, you are more in control on how long you stay under. When done in large holes on the river, there is no telling where you will re-appear. I have run Pine Creek in my 28 gal squirt boat and I ran straight into the dreaded moon-pie hole. No fear, instead of being stuck, I was just sucked down where the underflow just sent me downstream. I rocket moved back to the surface some 40+ feet below the hole.
Squirt boats are inherently slow. They tend to have a maximum speed, above which, they will begin to submerge. Hence, no surface dwelling!
Some Vid from last years Rincon Rendezvous.