My experience with many a long heavy load is this.
Whatever ruck you use - pack it carefully to insure shifting of weight is kept to a minimum. Things you need, radios, med kits, chow and water should be easy to get to without "dumping" your ruck. I never could get my rucks load back tight if I failed to think ahead and pack accordingly. Heavy items should be kept close to the back/frame.
Use the waist strap when load bearing equipment and armor allows. It really does assist in distributing weight during diffent movements and causes less fatigue than not using one. Use of the waist belt also reduces lurching shifts when walking side slope or on scree. (as a medic, I treated many teammates that got spasms or worse from sudden tortional movements with a heavy load during a slide or fall)
Additionally, the shoulders straps can be loosened when going downhill and tightened when going up; keeping your load balanced over the hips and feet. Adjust occasionally throughout long movements to insure no hot spots occur on back / flanks or shoulders.
All that said, tactically you need to be able to easily drop and lift your ruck for quick movement. Both with and without noise discipline.
Practice movements, sitting, taking a knee and going prone to include rests and immediate actions to isure your QR's and buckles work / are positioned properly for use with and without gloves. No ruck flops!
Always insure your weapon is not rigged to interfere with donning / doffing your ruck.
Just my thoughts, take them or leave them.
All the best to the young studs reading this.
