here is an interesting bit of advice on rucking that I found today. http://www.itstactical.com/centcom/interviews/still-rucking-at-63-an-interview-with-former-d

here is an interesting bit of advice on rucking that I found today. http://www.itstactical.com/centcom/interviews/still-rucking-at-63-an-interview-with-former-delta-force-operator-ed-bugarin/ http://www.itstactical.com/centcom/interviews/still-rucking-... for myself - never did anything formal - one of my mentors trained me according to a real life combat situation he was in: run/walk 3 days/nights carrying 60kg (his team was chased by vehicles). That was what I always trained for, so definitely outside the norm. Good luck with MdS - would love to do that one day.