Here is a picture of all the different tails I have tried. It is a fun process. I do all my designs with Fusion 360 and print with an Ender 3 and PLA, which for prototyping is fine, but not for longevity. The Versatail is a great way to customize your ski for you beyond binding and fin adjustments. I know of a few of us who make our own tails, and we all have different preferences, thus different tails. Creating a longer tail in order to add to the length of the ski is possible, but it won't necessarily make it ski like the next size up. There is too much else going on the other aspects of the ski design. But you can make larger tails and definitely make the ski behave differently. Have fun with the process, there is a lot to learn!