Ive got a 10 foot Jonboat with a trolling motor on it & id like to add a depth/fish finder.... I was thinking about a hummingbird but the fact that i have to hook it to my battery for trolling motor and in-turn drain my battery more, im kinda reluctant..... another thing im worried about is mounting the transducer. I dont trailer my boat, i load it in the back of my pickup & i am worried about breaking the transducer doing so....i know there has to be other options, cause i seen many kayaks rigged with depth/fish finders. anyone got ideas, recommendations ect ect ????