Duct tape will leave a terrible sticky residue as it wears away.
Does anyone have actual side by side range tests of flywheels covered with something versus unwrapped flywheels? Does wrapping the flywheels improve performance at all?
Personally, my own stryfe has replaced motors and plasti-dip on stock voltage. Although I have not officially range tested it, it seems as if after I applied the Plasti-dip I saw a very minimal range increase possibly ~5 ft more then with simply replaced motors, however, I did see a significant increase in accuracy, It seems as if the added traction on the dart allocates for the flywheels to fling the darts out a bit straighter. If you are teetering on the edge of applying Plasti-dip, I would go right ahead, its fairly cheap and makes your blaster just a little better.