Whether you chose to trim the skins yourself, or buy pre-cut skins depends more or less on two factors. First, whether or not the pre-cut skins will fit the skis you have, and your overall patience and attention to detail. In truth, not all skis will fit the pre-cut options available today, and trimming, once you get the hang of it, isn’t all that hard.
It’s just not something that you can do twenty minutes before you start the adventure. Pre-cuts are nice because they are convenient. However, you are limited in the selection that you have. Trimming takes a bit of time to do correctly, but if you spend the time, you’ll be assured a customized fit every time.