Ask HN: Sweat Equity Agreements – What Works and What Doesn't

For those of you that have been part of (as founders, employees or investors) a start-up that had sweat equity agreements, what aspects of the agreement did you feel worked and what did not?

I'm a full-time sole founder of an early stage startup. I want to bring aboard one or two partners who will work on it part-time until cash flow is sufficient to offer a salary. A lot of advice out there talks about providing sweat equity, but sweat equity agreements seem difficult to do well.