[negrini]

bacampbe, as Jason mentioned, its noticeable the improvement a gyro gives, but since you are mostly at flat water spot, it will not be fully used at its potential. An external unity will give you a beter location to sense the move, as actual computer location could dampen the yaw sensor. Also, using NMEA 0183, is not the best approach as this is too slow to transmit rapid acceleration data like the yaw sensor, reducing a lot the "sensitivity/resolution" to make correction in time. You should either install the Gyro directly to the analog input to the course computer or install it right to the motherboard (the cheapest solution). I would keep it as it is today, use and get used to it first, before upgrading to Gyro.