So many gardeners have tried the "cage" method when growing potatoes (this where a structure is built and the cage is continually filled over the growing season) and the results have been very mixed. The answer to this success or lack there of all comes down to variety. Yup, that is the wild card when using this planting method. After many hours of researching this method, and it's results I finally came across a site that mentions specific varieties- YES!!!
I already knew Yukon Gold tots would not yield more using this method. And now I know three out of the four varieties I ordered this year will not be appropriate for this method. (Darn!) Almost had 2 varieties to cage, almost.... turns out fingerlings (yay, thats me!), Yellow Fin, Red Pontiac (my almost), and Indian Pit are recommended by this outfit, Irish Eyes. That link will bring you to their potato growing tips page which is loaded with good information. More information on building a cage can also be found on their site under "How to Grow 100 lbs. of Potatoes in 4 Square Feet" in the Grower's Guide.