in theory you want to hold a few knots above Vmd with AT off. Let the speed bleed off in the turn so when your wings level again you are at Vmd with a bit off excess thrust which during the straight leg will accelerate you back up to your few knots above Vmd for the next turn.
Thrust remains constant and therefore no over fueling to accelerate the engines.
Of course Vmd isn't published so Vx is probably your best bet and I think on the bus that would be green dot. Or if it isn't then Vfs would be a good speed.