I came across this good training video on barrier training if anyone wants to train this...part 1 and part 2: Very good!
http://www.youtube.com/watch?v=OuTh47i3hOY
http://www.youtube.com/watch?annota...&feature=iv&src_vid=OuTh47i3hOY&v=oNE_WJ1nMu4
http://www.youtube.com/watch?v=OuTh47i3hOY
http://www.youtube.com/watch?annota...&feature=iv&src_vid=OuTh47i3hOY&v=oNE_WJ1nMu4