Originally Posted by Pikey Dave
leave the GPS where it is, low down is good, it gives a more stable reading.
If the accuracy due to the extra couple of feet off the water and the roll of your rib is that
important I woud suggest you might be better getting someone to look over the bow than you at a plotter screen!
Either that or switch on the "track smoothing" option.
Before this turns into a huge debate, my point is that the realisitc
accuracy of the GPS is, say, 3-4m. Your console to frame height is going to be , what another half meter at most? If the boat rolls the console antenna will move say 6". the frame mounted one might move a couple of feet. Is that really an issue in a 3m circle? (Especially when you sat there instantly blocks a couple of horizonal satellites that a console antenna might miss that the one on the frame would see that will help to improve your positional accuracy!)
Back to the OP, just make sure that the antenna bases don't obscure the while light to port & Stbd.
(although if you put the antenna on the slope of the frame it shouldn't be a problem)