Front-recumbent tandems.
I'm thinking of things like Hase's or Bileney's, where the stoker is in front in a recumbent position and the captain is behind in a DF configuration. Has anyone had any experience with them?
On the one hand, the stoker has a better view. On the other, s/he has everything coming at him/her with no control, which could be scary.
Also, balancing on a recumbent and on a DF are two very different things. With the stoker trying to balance one way and the captain another, doesn't that cause problems?