Nice! The physics were appropriately boaty and I feel like land-sailing is a legitimate tactic! If you were to develop this further, I think a fun direction you could take it in would be comedic and over the top frantic action - put a motor on the back of Charon's boat, make the steering more responsive and add a bunch of ramps and obstacles in the water and stuff on land to crash through (slap some wheels on the hull, too) ;) You'd just have to careful about Sega's Crazy Taxi patents :P