Pictures of guerilla grows, and pictures of Monster outdoor plants begs the question...
Are you better off growing 50 gorilla style with minimal babysitting, or 5 in well prepared holes and tended to regularly?
Overall Yield?
Taste?
Depends on your situation, my friend.
How much time you have? Do you have enough sites? Legal / security considerations?
For myself, I have no option -- only guerilla is possible here.
Larger numbers have the advantage of spreading your risk.
Not legal risk, but risk of damage from mother nature, for example.
Last grow I had on one site 8 plants in the ground, four in one area another four in another.
One of those areas suffering some external disaster and were all lost.
The other area was fine and grew out to harvest, along with my second site.
I think that guerilla grows can be done with a minimum of work.
Simple soil to start with, grow a little, plant out with minimum or no fert added.
Have to find good strains for this, but it's possible.
Larger numbers also mean you can try a bunch of different strains.
Esp if you have a new area to grow in and want to find out what works.
Do 50 plants of ten different strains 5 each, and you should find a strain or two that works nicely.
Same for growing methods if you want to experiment, can try different things to find what works.
Once you've found your strain and growing method then maybe move up to bigger plants?