Gitbit lures
Fist off is your buddy using a speedometer or GPS. Speedometers are notorious for being off traveling up stream or down stream how much current, makes difference what the speedometer reads. How is his motor set up on the transom, how is he loaded, no. off people how much equipment, what type of water conditons. I hate to say anything bad about any product. But if you really talk to serious bass (Tournament) fishermen, they will tell you they don`t think much of the ballistic props. In fact walk through a landing at a bass tournament and see if you even find one boat running the ballistic prop. ( To me that pretty much tells the story )They don`t get the performance or lift out of Ballistics that they get out of rakers, four bladers and five blades. In my experience running bass boats. The Ballistic props will cavitate and you don`t get as much bow lift when you really try and trim them up versus a raker. Rakers are designed to run shallower, closer to the surface of the water.
That is just my opinion, from my expereince.
My two cents worth
Tom P.