@pesqimon, I have preset trees although I did not this year. When I have preset I used a loop of paracord in a grn/brn color that blends in well. I mainly hunt public land and don't really like to advertise my setups if I can help it.
The paracord works well, it is strong ad slippery enough to the do the job. I tie it in a continuous loop around my preferred tie in point with a tag end hanging loose so I can attach my rope to it. Pulling one side of the loop feeds the rope up, around my tie in point and back down. Once routed I just disconnect the main line from the paracord before girth hitching. This method always leaves the paracord where I want it. I thought about presetting a couple of trees this year that didn't have convenient tie in points (i.e. no low branches) using a WE stepp and routing the paracord through the triangle, around the tree and back through the triangle. The WE Stepp would support the paracord and rope during install but I would still be primarily supported by the tree once girth hitched. I tried it at head height and the concept seemed to work but I never had an opportunity to put it into practice. It's one of those "off season" trials I'll run this year.