Extremely Bullish Chart Patterns, page-146

Dear ffoyzer,

Not advise but I read your conclusion is not "more than 20% per share".

That still can burn you heavily... A deep fall of 60/80% like you suffer in SGH can represent almost 15% of your entire capital..
My suggestion (not advise) is

Maximum 10%
Stop loss defined not more than 10% of your current buying price.
If stop loss worked don't come back to stock even if look so cheap
If you come back (in the way up) adopt 3 stages(to this 10%
a) first purchase 30%(of the total 100% you will invest in this share) and again stop loss -10%)
b) second purchase just do if the price went at least 5% up.. Buy another 40%
c) again wait another 5% up and buy final 30%...

Your average will be fair and good and again 10% down stop loss

Have a good week end

Cato