garmin CV23 vs GT23
what is the difference between a CV23 4 pin and a GT23 8 pin. This is for a garmin echomap plus 64cv on my jetski. . I will use this for a lot of bottom fishing and in less then 250', halibut and lingcod fishing up to 1000' and also tuna fishing in deepwater but only scanning the top 200'. Currently running a GT15m. Thanks