Originally Posted by f123olly
Speed=distance x time
A tennis ball on a measured string and a stopwatch will be about as good as anything you can buy...and its cheap!
Well, since our boat is faster, we found that shooting a Chihuahua dog over bord was more accurate...we tried several sizes. We found out that the ones whose eyes were sticking out more would be more accurate.
Good for foggy days, also, as we just shoot the Chuhuahua off the bow, and if he whines, then ther's something there!!!!
good thing is they swim back and are re-useable...
Just make sure not to throw your Chihuahua while in port, they don't have very good bounce back qualities!!