Hinds' impressive trial with Watford Under-23s has been rewarded with a permanent deal.
The 21-year-old former Arsenal striker has signed a one-year deal with the option of a further 12 months.
“It felt good," he told the club website. “I've been out of football for 15 months and now I'm back. It feels good scoring again. Hopefully the 'trialist' can change to my actual name now.
“From now until Christmas my main goal is to get my confidence back and start playing to the best of my ability. Then after Christmas to push into the first team or go out on loan."