well, i dealt with this when i first started feeding my gelding. it was starting to get really bad, and he would rush me and eat the food while i was carrying it up a muddy hill to his house (wasnt the best situation at first, now we moved him). So what i did was when he started to come near me, I stopped, put the bucket down, and made a scary voice at him and said 'UH UH! wait....' sometimes I had to carry the poop fork with me and kind of wave it at him when he started to come close. very very soon he learned that he needed to just wait in his own space until i put it at the top. then I would call him and reward him for being so good and waiting. he never developed a fear of me, the bucket, or the fork. good luck!