I mount my Garmin GPS V on the boom with a swivel...then I use a labor-saving device called a "crew" to flip it during tacks/gybes.
I can read the gps display from the trap no prob.
I like the Velocitek system...they seem to have their stuff together. But it cannot take waypoints and so I'd still need to have the garmin for distance racing.
There is a third choice, the Sail Nauteek SC200 unit lloks like it might have it all.
SC200 The numbers on the Velocitek display are bigger than the Tac Tic. I'll have to take a photo for you but you could read it easily from the spin pole. Heck, you can read this thing from another boat. I was just wondering if there would be too much going on up there that it would foul lines etc. Come to think of it though, thats where the N-20 (I-20) guys mount their Tac Tics. Photo coming if I can get motivated. Ed