Voldemort,
Nice to hear that somebody tries out a tandem. We are just thinking about trying a tandem. I've read a lot about it, but have no real-life experience yet (we're waiting for some nice spring weather). That makes me the ideal arm-chair expert...
Head over to the tandem forum for some honest advise on what to do next. They talk about the risks involved with incompatible partners, cost of a tandem, the true roles of captain and stoker, etc. Questions I think are worth asking yourself before committing to spending a significant amount of money.
Duppie