I hadn't used spikes in forever, but I just found a couple pairs of my old HS XC spikes from a decade ago and decided I would give them a try out on the trails for some random/whatever easy runs. I don't remember what lengths I'm going to want for what conditions, so if I'm going to be out in snow and mud, will I want longer spikes then? What length would be ideal? Whatever I have in there right now is pretty short and when I took them out today, they were OK in snow, but not great in mud. Thoughts?