With high-aspect or gybing boards, you'll want to pull them on the trip downhill every time unless current is pushing you where you want to go. Haven't seen a Viper yet - are gybing boards allowed?

The Cap boards are deep and they gybe. If you are pulling boards, the strap or line system to get them up is a great feature. Crew comes in from the wire approaching A, pulls windward board, sets the 'chute, then a quick tug on the strap gets the leeward board up, too, without the need to go low to get it. An older innovation, sure, but a welcome return for this feature, IMO.