Cheers for the suggestions, will try them out.
Been playing around with Google maps a bit more, you can programme one additional stop to try and force it to go a certain way but it's hit and miss. Also it counts it as a proper stop so you have to actually stop and tell it you want to carry on with the second half of the route so a non starter really.
I've seen the Tyre one before. My brother did a tour down the West coast of America last year and the leader had a TomTom so they planned their routes with Tyre.
Copilot one looks quite good as you can at least programme waypoints and looks pretty fully featured with lane assist, traffic etc.
