That's how I tour. And I pick up more maps as I go along. We haven't brought any maps with us on the tour we're on ... we just pick them up as we go. And they often are quite general.

I couldn't be bothered spending a few weeks painstakingly solidifying a blue line from A to B, and besides, no sooner do you finish that and get riding, but you discover that there's construction and you have to reroute anyway.