Hey Cane Pole,
I have been looking at PC based sonar and PC GPS and was curious if you have tried any of these products.Interphase: PC/VIEW , Qstarz eXtreme Bluetooth GPS Receiver (51 ch MTK, 32hrs, 1-5Hz Configurable, Dual USB/Bluetooth)(Your Choice of Free Mount) - buy GPS Now. I am going to buy a Motion PC and try some ship based GPS managment. Waypoints are getting out of control. Anyway, take care and good fishin. ><>