If you intend to "re-home" as in these roosters will go off and live a happy chicken life elsewhere, patience will be your best friend. You might find someone willing to take them, but it won't be easy. Be persistent, make more flyers, re-post the craiglist ad, etc. But 99% of anyone willing to take your roosters will be making dinner out of them. If they are truly nice roosters, you have a better chance of someone actually taking them to keep living, but most people get rid of the meanest roosters first, so be sure to play up (truthfully) their salient qualities as roosters.
If you're not willing to part with them just so someone else will eat them, why not just eat them yourselves? Roosters are tasty. If they're older than 6 months, just make a slow-cooking soup with them. If they're under six months, crockpotting works well (we cook for 6-8 hours).