Actually I tried few times to collect a board on the water, but faced complications. Maybe during self rescue training @WAK_Akis can you also show correct one hand water start technique? Or at least give tips how correctly help your buddy in different situations and not to share his situation) can you?

The easiest way is to place the board on top of your chickenloop, this way u can keep both hands on the bar and balance the board easily at the same time

Downloop