If you are having problems finding a Rails developer, then why not pick up the best developer you can find regardless of the platform that developer knows. If

If you are having problems finding a Rails developer, then why not pick up the best developer you can find regardless of the platform that developer knows. If you absolutely must use Rails, then a good developer could probably pick up Ruby and Rails quite fast. Your progress may not be as fast as you like at the beginning, but that might be a small price to pay for getting the right person.