Basic hand positions includeRack position (medial) like a kettlebell racked hold weight is behind and below the wrist if hold overheadCenter Mass (proximal) where the weight is centered around the wrist.  Note One of the handles can rest on the forearm if you have a wrist or hand injuryExtended (distal) where the weight is furthest from the body like a bottoms up kettlebell or out in front on a curl.90 deg down/Hanging - like hanging below hand on a curl, Fly, or side lateral raise.  This increases stability and seems to reduce/eliminate stiffness and unpleasant feelings90deg upright - Weld held directly above wrist when at the top positon of a curl or side lateral with it being 90degrees away from the body at the bottom positon of these movements.  This loading significantly increases the loading on the bottom end range of the movement.  This balances the loading of the muscle in both extended and contracted phases and increases the total average load during the lift.  Definitely a lift for the kyubell sadist.