Here is what the modified recumbent bike looks like. Big Cooper and Little Nikki provide the power. This design was made for the urban environment. The tow-bar does a couple of things as opposed to using ropes or lines. One is I have more control of them in case they decide to dart in front of a car for whatever reason (like a squirrel running out across in front.) The second is it keeps them from drifting back into the wheels or chain and sprockets. Mushing commands are the same and it’s no problem to switch to a sled.