How about trying a combination of the suggestions on this thread?
I'm all for a PayPal donation link on the site, but I also think that we might possibly be able to do something along the lines of what one of my other favorite sites does---they offer a "free" board in which you can read and post on certain parts of the forum (here, for example, that could be Cinn. Reds Talk, perhaps).
Then they offer a "plus" membership (only $12.00 or so per person per year) which entitles you to read/post on other parts of the forum (here that could be Non-Baseball Chatter, Minor League/Dayton etc. Forum, and all others you would care to brainstorm and create) plus a free email account at the site, private messaging, chat, and some other perks for "plus" members. They also have a Paypal donation link on the site as well. The "plus" membership fees help fund their site, though they sell merchandise and banner ads as well.
I'm not sure what their traffic count is, but I would think it would be equal to or probably even greater than our board here---I DO know that they have over 19,000 members and I think they get between 2,000 and 4,000 hits per day.
Anyway, please check it out at coacht.com (it's a Tennessee high school sports message board and one of my favorite sites, and just possibly you might come away with some ideas that will help us here). I think you probably could even email the man who created that site and still works very hard to keep it going. He is a high school coach in Lawrenceburg (I believe), TN and his name is Jim Thomson. You can email him at email@example.com
and I'm almost sure he would share his experience at keeping his site going. You guys probably share many things in common!
Several people seem to have offered good ideas here on this thread, and I just wanted to mention the above combination that seems to work for one of my favorite message boards/forums. I hope you'll take the time to at least visit that site and that it will help you somehow in your decision of what direction to take with Redszone. Whatever works best for you guys (boss, gik, ...) just let us know. I would be more than willing to fund a month's hosting fee, pay a monthly or annual membership cost, or make a donation, whatever it takes to keep this site going.
Stay in touch...