Maybe. It's not the material that makes up the body that matters very hard. It is the axle system. If the yo-yo is not trans-axle (fixed axle, meaning that the string is tied directly to the axle) many of these tricks will be harder.
If you work or intern before you start a program at a 4-year college, you can gain experience in the field you're interested in and make note of this in...
Depending on what type of plastic it is, it probably will stick to it. You can put parchment paper sheets between the mold to avoid this, but the heat from...