My only tip I have when using this for the first time, are the shoulder straps. Make sure you weave them through correctly so your ruck doesn’t fly off your back.
Other than that, the Alice back sits perfectly while rucking. I did a 4 miler the other day and got a sub 53 min (45lbs). Very proud of it, and I feel like it’s due to how tight and compact I am able to get the ruck on my back while shuffling/walking.
The weight doesn’t shift back and forth like other rucks. Which can scratch up and scrape your back. But of course, it’s all about how you pack and tie it.
Highly recommend! And it’s a nice change from the Molle packs. Those are still great ones to use though 💪