Using "Back to Start" do you have to backtrack perfectly for this feature to work? Example it your starting point is A and one goes A to B to C to D to C and at C hit "Back to Start". Does it take you back to D then to C, B, A?
I hope that makes sense.
If it is the case is there a work around so that you don't have to backtrack perfectly?
Not exactly sure how it works on the 705 as I have not tested it. I know that with the 305 it would do it that way.
Give it a try next time you are out. If all alse fails you can go to the map screen. Use the thumb stick to scroll to the your start location and press enter. It will then let you select that spot and go to it.
actually I found today that it routes you back using your previous route...so, in my case, I'm at the beach this week and I started out on street A, traveled down to the end of Ocean Blvd (N. Myrtle Beach, SC) on street B then went 10 miles up all the way to the end of street B. On the return trip, still on street B, I chose to try the "back to start" option because I blew the sidewall on my tire and needed to head back. This routing took me all the way down street b again and then back up to street A although I passed Street A on the way down...I obviously didn't follow the recommended route.