Pro Start is your friend Pete. It talks to GPSAR perfectly. I love it. Although there is almost zero time to look at it while sailing unless its light. But it records 40 hours of sailing on it. Its fun to go back through it and see where you went wrong. The detail is quite amazing.

I got my metal working mate to make me up a very light aluminium bracket that i sew to the tramp between the mast and the starboard hull just behind the front beam. It seems to work really well there. The jib self tacker seams to protect it from the spin sheets.