Trying to achieve the highest lean angle reading is a recipe for disaster(I know)!
The best way to use it is,on track,is to set a lap time,then try to improve that time with LESS lean angle.
In other words,get your backside off the side of the bike followed by moving your upper body off the side in the turn rather than counter-steering(this also has the benefit of making you relax your grip,which also allows the bike to turn).Then,on exit,weight the pegs and use your upper body to pick the bike up and accelerate out of the turn.
I always try to keep the angle below 55 where possible because there is more to be gained accelerating than cornering(apart from turn2 Almeria-that's where the photographer takes particularly good pics!).