To Pop Loc or Not?????

[misteroo]

A lot of energy of cycling is lost through the forks, especially when climbing.

 

[mattr]

Ah, advertising. That's why you want to use it.

No, you don't lose a lot of energy through your forks. Fractions of a watt. It's moving slowly through a small part of its travel. So losses are small.
If you use your fork as a pogo stick, it might be worth it, just so you have something solid to heave on.