Hi all first time post on this site , just looking for some help with my garmin sounder currently running 751 xs with a tm 150 transducer and iam not that impressed with it shows lots of interfearance under way and really isnt that clear , if it wasn"t for the furuno 587 on board i don't think i'd find any fish !. i really like the garmin and want to get the most out of it and particuly the chirp so is there any settings etc that i'am missing ; also running the echomap 70s with down and sidescan , any help would be appreciated .