Ya false are hell or high water to get to host. Most of them have never seen an anemone much less know what to do with is.. There are a few tricks you can try:
1) get a "basket" like is at Cap Bay, put the anemone in there with the clowns and float it near the surface. If the clowns have nowhere else to go, they might take to it.
2) people have tried the "hotel" trick. Turn out the lights and take a strong flash light and shine it on the anemone. The clowns will check out what is going on and might investigate further. When you are doing it, it helps the play the motel 6 song in your head and recite, "We'll leave the light on for ya"!
3) You can take the vegi clips that look like a clown fish and place it next to the anemone. Some have reported that the sight of a clown in or near the anemone will "teach" the clowns what to do.
4) give it time, time and more time. My false have taken to my anthillia after 8 months now. The female will be the one to look for the host and she must be sexually mature for that instinct to take over. So if you are dealing with two new males, you must wait for him to turn female and for that female to be sexually mature to even have a hope. All that takes time. P.S. having more then 2 of the same type of clown in a tank might hinder the sexually maturing process.