Hey, Matthew.
Thanks for getting in touch. It is very unlikely that Mr. Hambley have time for such matters.
It is obvious then that `capistrano3-unicorn` should get at least a couple of maintainers with enough free time and motivation to support project and release the gem.
There's also gem metadata, like `description` and `summary` in your `.gemspec` file, but some may consider it not nice to add such messages there.
Next thing, if someone concerned contacts you, you get acquainted with his GitHub profile / activity / skills etc., and ask this person to handle a couple of open issues. You'll know this is the right person, when you'll get a reply with positive results.
The other thing to consider is picking the most active and cool person from the forks and contacting them about the matter.
— jibiel