don't have LS or a fishing boat. have good lowrance elite SI unit on a pontoon but don't have it hooked up properly or use it and somehow I still ketch a lot of crappie. to each their own. one thing with the cost of units and complexity most folks don't have them and many that do can't figure out how to use them properly or at all. it's a tool and especially if your a guide or pro it's a must to have and that's fine. Millions upon millions of crappie in all the lakes we fish and it's not that significant on numbers taken. Fish a lot off bank or walking docks. Lots of different ways to ketch.
IF someone spends their money for this tool and takes the time to use it properly good for them. it's like anything else and folks can get all wrapped around the axle about it but it's like pizzing in the wind, no one cares.