Yes dingbat you can test them
1. What is the head unit
2. Where are you trying to test it
3/ Is this boat in the water all the time
4/ Is it bottom painted
5. Have you used a bottom finder before
Yes dingbat you can test them
1. What is the head unit
2. Where are you trying to test it
3/ Is this boat in the water all the time
4/ Is it bottom painted
5. Have you used a bottom finder before