>huge number of sweet potatoes to peel.

Well, for sweet potatoes, the alternate method is to scald each tuber in
boiling water for about 90 second, remove, and once it is cool enough to
handle, pull the peel off with a paring knife.

I don't know if it's any easier; if you have a good, sharp potato peeler and
some practice, a large sweet potato, even in an odd shape, sure wouldn't as
difficult as an equal weight of sprouting new white potatoes.

Neil