if you are using a bipod with skis, you can't pre load like you would with say a Harris... the rifle will slide forwardEric Cortina mentioned in a video that he does not pre load a bi pod. Because you never get the same pressure applied every time.
If you are shooting with feet or spikes under a foldy bipod (Atlas, ckyepod, harris, et al), you will need to preload and you can learn to get repeatable. As consistent as a FTR style bipod or a pedestal rest? no... at least not easily done. But yes, I do know shooters who can shot amazingly well with foldy bipods. Great skill/consistency and practise.
Can be done... just harder
Jerry