This is the Prostar with the boom mounted to the pylon. Sorry, I don’t have experience specifically with the tower mounted design. I have been using the boom since 2014 so if you have any more questions I will try my best to answer them. On a safety note, don’t approach an athlete in the water while rollers are going by as they we rock the the boat and the boom will travel up an down with significant force. If there is a person under the boom they could get hit by the boom. Think “wack-a-mole” and you get the idea.