Advice on a good training rucksack.
 

Hello,

I have been training for SFAS for a while now, doing: pushups, pullups, situps, planks, runs, swims, bench, curls, etc. In fact, the only thing i believe I'm missing in my workout is training for long ruck marches. I want to incorporate it into my workout immediately but i dont have a rucksack, or know anyone with the experience to offer me an honest opinion. I have spent a good amount of time looking all over the internet and at surplus stroes and these are the three i have narrowed it down to:

http://cgi.ebay.com/USGI-Large-RuckS...item588c456764

http://cgi.ebay.com/ACU-Molle-Ruck-S...item5ade040ba4

http://cgi.ebay.com/Rucksack-Large-R...item4aa80b5264

One of them has an inside frame, and two have outer frames, but don't protrude to much.
ANY ADVICE IS VERY MUCH APPRECIATED!

Thank you for your advice and service!

John Amos, while you think the only thing you are missing in your workout is rucking, I believe you are lacking in your attention to detail. Do NOT post again until you have complied with the instructions you recieved when you signed up at ps.com.