Have you ever wondered if your movement on land was limited? That maybe that was limiting your ability to move well on skis? If yes, try the movements in this video. If you find that you have trouble with any of these movements, or that they feel differently from one side to the other, you have a limitation. The key to this approach is recognizing that there are both functional and structural alignment issues. Assessment and exercise are your best option if the problem you have is functional. If the problem is structural, then that will not completely address your problem. Structural problems should be corrected with boot alignment.
I have a feeling there may be a lot of golfers out there. And I suspect just a few of them (read: most) are interested in improving theirs swing. And another small subset (read: large) are addicted to everything to do with golf. And that these people may just be interested to get a complete assessment of their swing, of the way they move without a golf club in their hand, and of the correlation between the limitations in the way they move and the problems they are having with their swing. And hopefully they will also be keen to do the few corrective exercises that will help them to improve their movement and their swing. I would think that those who don’t play as much as they want to because their back gets sore from a round of golf would be particularly keen on this.