All useful information. Couple tips I got when learning knee paddling on prone boards. Keep your shins touching the board. Don’t just have your knees and toes touching. Might take some sitting in front of the tv getting comfortable instead of laxing on the couch. Careful spreading your knees. If you keep them closer together you will actually use less movement to correct and or counter balance. Put to me like your using your legs like mini pistons. Micro movements. Last thing is forward movement is your friend. As soon as you get to your knees Stratton planting your hands.