My poison to you.... don't
I always use only one method...
the one best method that suits me...
I don't believe in using more than one method.
If I know I am good at investing...
I will just be an investor...
And if I know I am good at trading...
I will stick with trading...
I just do not believe in using many methods.
Ooooh....
Short term trading... ?
I do not do short term trading.
Why?
It's not that I cannot skin a trade...
It's not that I cannot day trade...
It's just that I know myself...
I discovered myself after years of just paper trading.
And what I know is...
I cannot do short term trading...
It's just who I am.
So I avoid it.
But that's just me...
Who knows....
You might be a good short term trader.

pssst.... We are discussing.

For me... these stuff... ie finding out what one is good at... these are the very important first steps....
pssst.... I paper traded for many years.
I think it is outright stupid to mess around and pay tuition fees....
Money is always hard earned...
I respect money too much.....
So I don't mess around...
pssst.... if you insist...
for short term trading....
use 6% cut loss....
pssst.... if you are an investor.... averaging down...
I know...
common saying is...
you are getting the same good thing but cheaper...
so you buy more ... ie you average down...
the risk?
such thinking leads to mistakes....
why?
sometimes... you invest the stock...
the price goes down.....
what IF...
what if... the main reason why the price goes down.... is invested wrongly?
ie... you could either pay too much for your initial investment...
or... you simply made a wrong judgement call on the investment...
either way...
when you average down....
you are simply buying more of your initial mistake....

. May the force be with you~
On the last part, it can be subjective...
U won't know from one qtr result or from sudden change in price patterns when there is no announcement on whether how u invested was wrong or not.
When people invest for long term, they should have some compelling reason (conviction) to invest. Out of the blues, when the market decide to mess around with u via a whiplash or orchestrated u-turn for the insiders to accumulate or if there is something brewing and about to announced soon, there is simply no way for u simply say your judgement was a wrong call until u receive further info to support that basis.
So normally, people who suddenly see 10 to 30% negative unrealised loss, will always either observe what is happening or accumulate more on weakness.
When things really go north 30% above losses or when the 2nd qtr results really confirm shit is happening or when there are plenty of news sprouting out everywhere that there is real shit happening, then the decision to cut-loss or to average down further is even more challenging. Put in money to a potential major falling knife or save your bullets for another rainy/shiny day?
But with that said, I think to avoid all the above drama, the best is to just be discipline and cut-loss when it has reached your preferred threshold. Go back in again at lower prices only after reassessing the whole situation objectively whether it is still worth the investment.