Ok I now have more questions. Can someone please send me a picture of where their transducer is mounted. It looks like the spot I want to mount it will hit on the fin on the bottom of the boat in the middle. I was thinking about mounting it between the gas tank and the V-drive but it looks like the fins swoop back so I am thinking that the transducer will pick up the fin.

If someone has further advice I would appreciate it. There is also a flat spot up further in the center of the boat between two of the fins, Is that the spot where the factory mounts it or is that the spot for the center drain plug, I dont have a middle drain only the one on the transom of the boat.

I really wanted to get this all done this weekend so any help and maybe a picture or link would be really appreciated