Learning as much as I can about the different technologies out there - but my question is - is it a waste to have a Garmin Finder with Down Vu and Side VU up in the front of the boat -transducer on the trolling motor - thought I heard SIDE VU / SIDE IMAGING only works at a certain speed....a speed that is faster than a trolling motor will go- is this true,,,or can any GARMIN guys confirm this ?

Thanks Creek