I was running in a small creek adjacent to mine jumping cruisers that were coming in for gas. So me and a buddy on an FX140 while Im on my SJ make a run in between two cruisers spaced far out and go for the double up in between. While speeding over, I make out a black murky thing I run over while enroute. So my buddy hits the wake, his ski FLIES into the air, he comes off and lands his ass on the skis siderail. So we head back to our creek and he puts his ski up. After toying around 360's for about 10 minutes, my ski starts vibrating more then normal at a certain RPM. So I head to his ramp and roll it over, and wrapped around the driveshaft is a molten black mass. After getting a big serated knife and cutting it loose, it turned out to be a trashbag that had crab guts in it from the nearby crab house and gas station in the adjacent creek. After riding for a hald hour with no cavitation, the bag had molded itself around the shaft and wrapped as tight as a single mass. Took at least a half hour to cut that hunk of plastic stinky crap out.