Lowering. Easy, just stand in the middle and hold both lines.
Raising. Side to side. Really, it would be a lot of weight to do at once, which would mean more tackle and more friction, or winches.... and not easier. Because the blocks swivel and have cam cleats, I don't have to walk side to side, only pull right, pull left, pull right.... And there's no harm in lefting a few feet at a time.
As everyone has suggested, a 6:1 tackle and cam cleats is the way to go. So easy my girl could manage it when she was 13.
Sail Delmarva: Better Purchase for Dingy Davits