when prices are falling i usually start to my next tobacco shop to buy a btcbon. https://www.bitcoinbon.at/
the good thing is u can buy the bon 24/7 in every city in my country.
u can choose between BTC/LTC/ETH with ur bon if u want to redeem it.
the best move of this u can buy the btcbon and hodl it,its like a credit bon for phone sim cards.
i keep this btcbon`s until the price is really low and than i can be really quick  redeem it for coins ;-)

thats my best choice for quick trading.