Jan and I met a couple in Kent a few years ago. She, very slight, was on the front, he, a blind, tall chap, was on the back. The tandem had been specially made for them.
Tim Hall knows them, apparently. You are always welcome to try our tandem. Maybe the front would be a bit big for you, but you might be OK. I suspect that you wouldn't be able to hold Woolly up when clipped in and stationary. I find that the height of the saddle is more important in this respect than the mass of the stoker. Woolly, of course, would require a high saddle and is Not Small.