I LOOVVEEE JOIN UP!!! We do it a bit different then monty, we don't use the round pen we do it in the ring. We send the horse away, and chase them, well not really just walk after them, matching thier pace and directition, turning when they turn picking up the pace when they do etc. then when they slow and stop and look at you, you back off. Then when you have thier full attention you walk slowly, eyes down in a zig zag pattern to them(if they run you do it again) if they don't you scratch thier head or shoulder and turn ad walk away... then if you did it right they follow its very cool, but i've done it so much with sable he just does it automaticly!
the hardest part of riding is the ground... yup sounds about right