Looking at up grading my humminbird Helix 9 d i to a helix 9 SI Mega. My question is with a 150 Merc and 9.9 kicker on the back how big of an issue will the Side Imaging signal getting blocked be? I believe I read somewhere that they make transducers that can be mounted on both sides, two transducers, that will alleviate any potential issue but I'd rather not have to do that. The boat is a 2016 Crestliner Super Hawk 1850