AFL Winner is a oscillator, it does a tick volume MA find highest/lowest value of MA in period and if it reamain in this range AFL remain in 100 or 0 zone. Parabolic channel is also a form of oscillator.
So, using 2 oscillators one only confirm other. I think that use a trend follow with oscillator can improve this system, because oscillator will only enter in trend direction, i.e. don´t buy in downtrend or sell in uptrend that generally cause a loss.
I use AFL with ADXVMA, it could be a good idea test this parabolic system with some trend following like ADXVMA or Step Average ATR MA.
ADXVMA is a very good trend following, the main problem is when market become too much flat ADXVMA flaps, pehaps mr Mladen (that create ADXVMA) can do something to fix this, like adding a step or DSL level. I add a 2 bar smooth that improve but not solve flap problem.
Congratullations for this topic and have a nice sunday !