Core material makes a big difference in a fiberglass ski. however, even with heavier woods and thick glass, the wood and glass in the ski are breaking down (and the energy coming into and out of the turn diminishes.

Do skis get softer with age?

After 100 days of skiing, your ski won't have the same feeling or snap it did on day 1. Over time and use the materials lose their rigidity, edge and even flex.

Do skis get more flexible over time?

Softer Flexing Skis

Skis are usually softer towards the tips and tails, which enables the ski to more easily bend when going over bumps or through gradient changes.