Getting better traction on a wet hillside | General Homesteading Discussion | Forums

I'm in the process of building a yurt behind our house, and I'm using a new-to-me pickup to haul fill and building materials up from the driveway to the site. There are a couple short steep stretches I can power up in 4L when it's dry but when it's wet I just wind up tearing up the ground. With the wet summer we're having this could really slow down our building schedule. Guessing mud tires could help but that's not really in the budget right now. Is there anything I can put down on the ground to improve the traction?