Faster is more dangerous than I wanted to try the first time... But with the lake...
[Pulling out a bone knife, and quickly unscrews a part near the base, tinkers with it, and then back together... with more room this time.]
They work by redirecting force... if you stomp on them, they'll send you up, if you lean forward, you'll move forward. Ah... you'll be able to feel it.
[Holds them out.]
Even with that, it will probably be a right fit, but...