SSS well impressed, not sure I'd attempt that on a solo, deffo not on a tandem.
When I first took our original tandem out, we went down the road and failed to make the corner at the bottom, as my girlfriend (now wife) tried to keep the bike bolt upright which prevented it turning the corner. Was a steep learning curve. Most important things is communication.
Current Tandem not used often as new little-un is too small, and trying to work out if a childseat and 2 in the trailer is gonna work 🙂