Basecamp is a bit annoying with the map and needing the GPS connected, but I don't have trouble using it...in fact its a very cool way to view your routes, plan new ones and save them to the GPS. You can even look at pinpoint data from your trips...click on the point and see all sorts of data: specific point in time speed, elevation, etc.
Th OP was having trouble with seeing the dual view screen....that's annoying...you can switch out of it. I'd have to go out to the garage, pull the Nuvi, back in the house, downstairs, fall back onto the sofa, wait until it loads and then figure out how to switch the views. Sorry.........feeling reeeeaaallly lazy right now.