We never fully deployed it, just played with it on a trial basis. Getting ebaord members to use it was the main challenge. In the end, we decided analog means would be simpler. We just used large sheets of presentation paper to make a calenders for the whole semester, hung them in the lounge, and then marked/updated/checked-off deadlines, goals, etc at each ebaord meeting.
The real trick is just getting good at setting deadlines for tasks and getting people to hold them (or at least update them as the need arises).The software might help, but it's not a silver bullet. A bunch of paper calendars can help too, and they avoided the need to convince people to use a new piece of software. In the end, however, regardless of your tools, it really just comes down to convincing ebaord members to take responsibility for their positions, and put in the required 5-10 hours per week to get things done. Tools can help coordinate and track progress, but they can't make progress happen on their own.
If you do go the collabtive route, the forms/mailing lists were pretty active IIRC. They helped us work through a few install issues we had, etc.