Gpaulski, glad you are planning on taking some lessons. Lessons can help you manage speed more appropriately, keep up with your son, give you more control when you ski on longer skis, and those longer skis will help you handle speed and variable conditions with more control. Here are some specifics to ask for when you take your lesson. From your videos I've taken some screen shots.
1. See how your shins are at 90 degree angle to your skis? See the bend in your knees?
This combination causes you to ski in a sitting down position; it taxes your quads and
compromises your balance because it limits your mobility. Your weight is more aft than
centered, which means you are shaping your turns without using the bend in the front half of
your skis. In your lesson, you will probably work on your stance to eliminate this perma-crouch
and get your weight centered over your skis.
2. This shot shows you skiing "square" at the bottom of a turn. This is ski instructor language
for keeping your upper body (shoulders and hips) facing in the same direction your skis are heading.
For better control of your skis, you need to allow your them to turn under your upper body as a turn
progresses, while your upper body turns less. If you were doing this, in this picture we would see
your shoulders, face, and hips facing the camera while your skis and knees point off to the side.
Work on this in your lesson; it's called "skiing into counter." Counter enables you to better do
what is discussed in #3 below.
3. In the picture below, you are "leaning in," aka "banking" your turn. This feels
quite natural, and usually is bundled together with skiing square. The problem with
banking is that it loads the inside ski with too much of your weight; your outside ski
will have difficulty holding its grip on the snow, and you'll find yourself sliding
diagonally down the trail without much grip on the snow. You may be going fast, and
you may be skiing on a steepish trail, but you aren't really in control if you are sliding
diagonally down the hill. That outside ski needs a better grip on the snow.
To get it, you need to have more of your weight directed towards that outside ski.
Work on eliminating banking in your lesson(s).
You will be amazed at how much more directional control you'll have over your skis
once you allow the skis to turn more under your upper body, direct your weight and
the forces of the turn to the outside ski, and replace the quad-burning crouch with a
long-leg/short-leg stance that moves your weight forward.
4. Nice pic below! You are initiating a turn with a release of the old outside ski; that leg is
flexed and your body is toppling in the direction of the new turn. Your new inside arm and
shoulder are advanced; your new outside leg is extending. You have a long leg and a short
leg. All of this is really good!
Your instructor will be better able to see what happens between this strong initiation and
the rest of the turn that leads to skiing square, leaning in, and being crouched and aft.
Hang onto this good stuff and replace the other movement patterns described above
with new, more functional movement patterns, and you'll find that longer skis will feel better
than those 150cm shorties you are currently on. Everything will feel better!
Edited by LiquidFeet - 10/20/13 at 8:43pm