I haven't been active in the hobby in the past few years (heck, the past 10). One thing that concerns me is the "super-pump" and dual pump ships apparently now common in the club. When I was active in Florida, Don Cole was running one of the 1st "Stinger" pumps in his Alabama. Now, Don is an excellent and very aggressive Captain (which could also be a factor), but I don't remember EVER seeing him sink. So here's my question / challenge: Entirely remove one window's-worth of balsa from the bow of your boat. Combat load it with a full load of CO2 & bb's. Disable or turn off your pump and measure how long the ship takes to sink. Now refloat, enable your pump, and repeat. Some boats out there may never sink with their pump(s) running in this scenario. So for those, repeat the experiment while driving at full throttle. Post your results to this thread. I'd like some hard data on modern DC.