I agree with edk. Mine has worked unbelievably well using a Thru-hull Airmar. Probably the most important consideration will be the location of your Xducer.
Being as cats can get a lot of air between and under the sponsons, you will want to trial fit it before you permanently mount it. I would imagine that you will probably find the best spot somewhere rearward and outboard of the center line (keel or pad) of either sponson. That's why I asked what cat you were installing the system on.
Keep in mind that the BBFF1 can be set to 1 Kw but you need a more expensive xducer for that. I don't think you will gain anything by it unless you are fishing the canyons frequently.

" A HALF truth is a WHOLE lie ! "