Well you see, a sky boat is a boat that is lifted up into the air without using props to hold it up. http://steamcommunity.com/sharedfiles/filedetails/?id=659570828 Please someone tell me the difference between that and using the weld tool? The difference is THERE IS NONE IT'S A SKY BOAT. You can't shoot a rope to destroy it so the boat is literally abusing a permanent weld that lifts another prop into the air. SKY BOAT AF.