Do a little research. Find teams in your area, look them up, and if they have representatives on Chief Delphi, PM them, asking about the team. It's easier to join a team you know a bit about, or know a bit about the people, than to join a whole new team you know nothing about, and there's no better place than CD.

So, here are some steps:
1. Do some homework. Find teams in your area you may be interested in mentoring. This page on the FIRST website may help with that.

2. Make a "picklist" of teams, and do some research. Get a few teams, and read up about them. How they run, how they usually perform in competitions, what roles mentors play on the team, and most importantly, what you can do to benefit the team, and vice versa

3. Once you find your top teams, start contacting people on them. If they're on CD, then PM the people, and ask about the team.

4. Start asking if you can help mentor. Do this carefully, as you don't want to ask 3 teams, and have all 3 say they want you at the same time. Choose a number 1 team, and contact them first. If they say yes, you're in. If they say no, ask your number 2 team, and so on.

Pro-Tip: If you are at your 4th or 5th team, and nobody is accepting you, you need to look over what you're doing, because something's wrong. The biggest issue I see people do when they try these kinds of things is either over-selling themselves, or under-selling themselves, usually the latter. Show them your FIRST experience, what you've done to benefit your past team(s), and most importantly, what you will bring to the table if you join their team.

Good luck finding a team! I hope you find a nice new FIRST family!