I just thought I would throw this up for anyone who had not seen it and might be interested... http://www.sparkfun.com/commerce/product_info.php?products_id=8266 looking at the spec on the velocity measurement error, it should be readily possible to add a small datalogger (perhaps a pic, eh wreno) to this tiny critter and simply toss it in the ship and measure the speed directly. It might be a decent thing to look at for someone with more time than me. Might even be possible, for those ships with an esc, to create a speed limiter that plugs in between receiver and esc. Set max speed allowed and go. anyways, just posting so others who might not have seen this can take a look.
