There are lots of pilots in AH that are better than me. Saying this first, I will venture to tell you that G-10 has only one factor to care about: energy judgement.
If there is an aspect where G-10 excels is in gaining energy. She boths accelerate and climb like no other plane in AH, saving low La-7's. So all of my fights in G-10 are very similar. If I am in disadvantage, I try to suck my opponent's energy. That involves taking some risks, often giving them bad gun solutions (i.e. high AOT shots). If the bandit choses to take the shot, he will be pulling some serious G's, and losing energy. If he choses to extend, G-10 will gain more energy than him.
If I manage to turn tables, I try to stay over my enemy at all costs, and try to keep the fight as slow as I can (around 200 kts. is best), since G-10 is very sluggish at high speeds.
The best manouver (IMHO) in G-10 is the spiral climb. It's good both clockwise or counterclockwise, of course better counterclockwise. But no plane in Ah can follow a G-10 climbing like that.
If the bandit chose to follow, he`s pretty much dead meat. On the typical climb, once speed falls below 140 kts he will be flopping around fighting the stall some 1 to 2k below the G-10. Using rudder the G-10 will then flop over and turn nose to the then stalled bogie, which will be a pretty easy target.
If the bandit is wiser, he will break at around 200/250 kts. Then the G-10 driver would make a lazy low G turn with substantial vertical component or something similar to reengage his target. If you find yourself against a bandit like this it's all about sucking his energy, making him lower and slower with each of his manouvers. If you judge relative energies efficiently, you will find the bandit trying to break turn or Split-S lower and lower each time.
The bandit which makes me most uncomfortable is a fast plane (Pony, Dora, F4U, and the likes) making a barrell roll. Very difficult to find a gun solution and easy to overshoot in a G-10. Besides that, the bandit will loose only limited energy with this, leaving open the chance to take a shoot if the G-10 choses to climb away.
All in all, G-10 is a beautiful plane especially with tater gun alone. It makes you feel the fight very close and personal, since you have to get real close to actually hit your enemy. When you turn your nose against a lower bandit after a spiral climb, you can almost feel their fear as your distance quickly close from 1k to 150 yds....Boom!
Flown correctly it will take you back home almost every time, yet will allow you the chance to fight aggresively every plane seen.
What a lovely plane!
(and sorry for the brick, hehehe)
