With that dead rise you need to be close as you can to center to reduce wash and turbulence that will cause the transducer to lose reading. Just mount it on the other side from the live well and you should be fine. If it washes out, lower the transducer. When I mount them, I always place the screws in the lower position, most have brackets that allow the screws to be backed off and the tranducer can be raised if needed. Better to start at the lower and raise a bit if needed.
I run it at shallow as possible since I pole my center console on lakes for bass and carp in sub 1’ water, so i can get skinny and drag the unit if I am not careful.