1) I am going to train up a Hariyama and have already bred Cross Chop onto him, i was wondering if it was worth keeping the move Belly Drum to increase his massive attack even higher or does the loss of life mean its more of a disadvanatge in battle rather than an advantage?

2)I have been looking at Dusclops defence and special defence and they seem pretty high, is it worth training him/her up to be the tank of my team or is there another pokemon with a higher defence and special defence that i could use?