A top that spins for 10 or 30 minutes, while technically amazing, is so boring. Grass can grow in this amount of time.
Then again I was never fascinated by fishing. So it might be me.
Long-spinning tops have an attraction that can't be denied, and they're a lot of fun to engineer. But I started having a lot
more fun overall -- both as a finger top designer and player -- when I starting allowing myself to make tops with other virtues.
Learned over the summer that finger tops can be spun upside down if I put a bit of a point on that end too!
Looks like you're way ahead of us here, Bob.
... a longer stem/tip and higher rotor ...
Another good piece of advice that I have made note of! Thanks.
You've probably already discovered that raising the rotor can be taken too far. Unfortunately, the sweet spot will vary from top to top and may be hard to find when you're fabricating rather than assembling from a repertoire of parts like I do.