What defense works on the redzone/goaline in an 8v8 flag football situation?

I play in a Co-ed flag team where we got pretty good athletes but we have a hard time defending on the goal line because of so many crossers and people running into each other’s zones. I don’t think man is a good idea because I have exposed many people in the redzone on man-beating routes and you cannot really jam people or contact them in this league so man is definitely less than ideal. Just looking for ideas.