Just looking at maybe getting a cheap Sat nav second hand assuming I can find one that allows you to add multiple waypoints in one trip. I know nothing about them, usually I have a quick glance at the map before leaving and take my chances once on the road but might be a handy back up to have in the top box just in case. Was looking at gar min nuvi 660 or 610 but can’t seem to find a definite answer about whether you can add multiple checkpoints to a longer journey. Anyone here with any experience or info?