The sinus rinse will only reach your lower sinuses, because of gravity. The technique I developed uses gravity instead of fighting it.
http://www.medhelp.org/user_journals/show/2322
The Flip-Turn Sinus Flush is mildly risky, because you have to bend over to do it, preferably in a shower, but you can also do it outside on soft ground, or you can kneel down and lean over a bathtub with the shower running.
Nasonex does work for nasal polyps for some people.