I don't know anything about
I don't know anything about paleo but I'm a pro at getting rid of sinus infections. Lots of allergies combined with a total refusal to take antibiotics for something as utterly pointless as a sinus infection. So I thought I'd throw in some tips.
I would actually suggest using the squeeze bottle version of the netti pot. I found it worked a lot better. I can't remember the name, but if you look up the website you'll see it. It uses the same sort of saline, but just in a much better delivery system.
Also drink 8 ounces of water every waking hour. More after running Also steaming your face at least 2 times a day. If your tap water is hot enough you can do it by just running a sink full of super hot water, putting your face very near it with a towel over it to hold in the steam. Otherwise you can boil water.
Thats how I've been able to kick almost every one that's been thrown at me. The instructions were given to me by a doctor who was really rather annoyed with me for refusing to take his prescription, but after following the instructions to a T and getting rid of multiple horrendous ones, he no longer ever questions me when I tell him no on the antibiotics.
And I second the running comment. Running always helps sinus infections for me.