hey okay in the thunder plains south there is a cactuar stone in a little enclave on the east side right next to a treasure chest if you position yourself next to the stone by the wall then when you get struck by lightning you can still dodge it but you wont jump about all over the place cause the walls in the way, i found that it may take a while but if you mute the music and just lie back and watch for lightning it works i did it after first coming to the plains and you dont get attacked either cause you dont move around. it took a while but it was easier than waiting until you have no encounters or anything, does this help?