Ive got the bigger Original Dragonfly and sikaflexed a new old style transducer inside my boat, it works well but on a long trip out & back past tip of Moreton I noticed on the return that the depth was way low not accurate so turned off the transducer, have used it since without problem but only short bursts, on the boat i use it mainly for the Chartplotter. Maybe the old style transducer doesn't handle being used too long out of water. The image when working is really good. Aaron's newer transducer has not shown the same traits.