Could any of the "small" inshore boat users assist in what type of sounder to buy as were replacing existing sounder present one is a Navman Fish 4431. it is now discontinued, new stern transducer required @ £70 if we can find one. A marine company has recommended a Lowrence Elite 4x HDI, suitable for what we require at a price that makes purchasing a transducer (if we can get one) not very cost effective. any other thoughts/recommendations from you all ie willybendit, bry carragher etc who post about small boat issues from time to time. no wasps about at present so, may be right time to ask. many thanks.