The risk of trading outright vs spread is quite similar.
If you don't know
when to press the buy button first,
when to press the sell button first,
and when not to trade,
trading spread is very risky too!
The best solution is to give up trading.
The major problem with the speculative bubble
is not because traders will lose tons of money
but traders unable to earn tons of money!
When the bubble burst, there will be heavy
volume/traffic. Charts & trading platforms would freeze.
the market movement could be chaotic making trading difficult.