my strategy there is to grow in ground, mulch heavily and use drip, so even if i do have rkn, it won't (hopefully) be as much as issue. in much of the deep south, it's unavoidable. time will tell, but so far i've got nothing except fantastic growth.
that's why you have to grow peaches, pears, plums, etc, grafted on special rootstocks that are nematode resistant for north central florida. i just bought some kiwi, and according to the ag agents, it's not worthwhile at all to plant that in ground due to nematodes, so i am going to be making some containers for those plants.
after this winter, i'm curious to see if there's a weather pattern change that will give me more chill hours (we certainly got that this year) which should allow me to fruit kiwis and other things. this is why i broke down and bought the kiwi.
as an aside, my pawpaws still haven't broken buds, though they're very much alive. i'm not sure what's going on with these, but i'm really hoping they'll fruit. everything else is coming out in full force.