I just purchased the OEM depth finder transducer for a 2008 speedster 150. The instructions are definitely lacking, but is fairly easy to install with the correct epoxy. The problem is dealers in this area have no clue about how to retrofit the transducer and the dealer many states away where I ordered the unit from is just as bad having never installed one. I called Seadoo and they will not help on any technical info and direct you to call a dealer even though the dealers are basically clueless. I know where to mount the transducer in the engine compartment. The question that I have is that do i level out the area under the gel pad with the expensive epoxy required. No one can tell me if the gel pad contacts the boat hull directly or do I need to smooth the area under the pad. The epoxy is needed to mount the base. Any other suggestions would be greatly appreciated. My other concern is once I install everything will the dealer know how to do the minute of programming!