I ride with diferent stokers on a regular basis with Vision impard stokers so when i'm stoping I anounce stoping and un clip both feet and slam them down as I stop the stoker stays on the pedals whilst I balance the bike. when ready to take of I say ready? 3,2 ( I Clip in one foot) 1, go and then we are off this works well and the stokers quickly get the hang of it.
When turning I say (for right turn) Right arm out then Ok when we have turned .
Been doing this for 5 years and get a big thanks from all my stokers as it is often their day out