This answer is completely theoretical as in practical study / analysis of a vedic horoscope one first needs to study the promises and then the activation period of that event, which we get to know from the mahadasha ruling period and its sub and sub sub periods known as antardasha, pratiantardasha, Sukshmadasha and prandasha.
To maximize the positive outcomes during the Mahadasha of a Yogakaraka planet, given the influence of other astrological factors as per the question asked, one should learn first the significances of the mahadasha planet i.e what are the events that the mahadasha planet is promising during its ruling period.
After learning about the events that the ruling mahadasha planet will activate during its ruling period, one need to check the same promise in the horoscope level.
If it is promised in the horoscope level also then the event will happen / activate during the ruling mahadasha period and rest of the events which don’t show promises will not happen during the ruling mahadasha period.
An environmental situation will be created for the none promised events of the horoscope level during the ruling mahadasha period as it is signifying those events in its significances, but as the period proceed the moments will slowly subside down and the event will not happen.
Now coming to the main question as to how one can maximize the positive outcomes during the Mahadasha of a Yogakaraka planet, given the influence of other astrological factors.
One should work on those events that is signified and equally promised in the horoscope level.
Suppose the mahadasha period is signifying 4th house and the 4th cuspal sublord ( as per KP vedic astrology padhatti / method ) also shows promise of the 4th house event then one should buy home, property, vehicles, celebrations at home, love mother very much and take care of her very well etc etc.
By this way one can maximize the positive outcomes during the Mahadasha ruling period signifying this events.
In the same way one can do it for other events also signified by other houses.
There are 12 houses / bhavas and thousands of events in our life divided into these 12 houses. It is not possible to write for all the houses as I am only trying to explain it from theoretical point of view as in practical study / analysis will involve many many more parameters that need to be taken into account before decisions.
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