I used that 3M Blenderm tape on my foamy, and I'm very impressed with it. It sticks well, and a little "stretchy". Seems Ideal for hinging foamies.

I've also seen some photos of a foamy that used "bi-di" tape with a bidirectional filament in it (lengthwise and across), but have not been able to find a place that sells it locally or on the web.