To make towing up the mountain more difficult, I’ve added 8lbs of rocks to my tire. I was afraid it was getting too easy.
The rocks are a nice addition for the psychological component as well. The first time I had them in there, I wanted to throw in the towel. The drag force was strong enough that I could still flex my legs to pull, yet not so much that the only thing to do was to lean forward and hope it slid. It was just right.
These rocks allow me to regulate the difficulty both going uphill and downhill. I can make going downhill more difficult than having an empty tire going uphill.
