i find it rather funny that the first airframe is actually the most aerodynamic the rest are just modeled after other planes that are less aerodynamic but have space for engines
deathnow11 have you ever tried to pull a cart with a car? you would need trailers, you pull a cart with a car and the damn thing will flip everywhere. i am all for trailers tho
oh just a tip, i am not sure for the barrels, but the most efficient water carrier you can get early on is the medium water bottle, as in for its weight-capacity ratio