1. Has anyone used the Navionics Premium Maps on this handheld. Does it work ok?

2. When using the plotter screen, how do you stop the trail from flashing on and off? It gets on my nerves!

3. When I am "creeping" up to a waypoint with a spiderrig, it seems to jump around alot. My old lowrance (pre wass) did not do this as I was fishing from waypoint to waypoint on a ledge.