Regarding the mover. Fundamental mistake is to only use one button when turning. If we need to turn sharply moving forward, I also stab at the back button diagonally opposite. For example you are turning right, you are pressing the turn right button which activates the one mover on the nearside but by pressing the rear button diagonally opposite, the rear offside motor turns in reverse. This does prevent bad scrubbing but does not eliminate it altogether. Best is to do movement back and forward while pressing diagonally opposite buttons.
As for jack, we are members of Mayday so if we have a puncture they will come and change the wheel on the caravan so no need for a jack.
If you need a jack to fit the ALKO locks or level the caravan invest in a
Lock n Level twin bag.