This is a smart trader and this is what the best of the best do, there is a saying 'when there is blood on the streets' it is time to buy! Rothschild.
I see Bitcoin in my local area for a premium and then i buy back in on the next dip i kind of do the same as you except when its 'dead' i am buying back in as i don't have much left lol
Basically the old rule buy low sell high find a place you can sell high mine is cash in my local area
sometimes short or margin trading is a better choice/
That is kind of shorting what i do, i sell at what i believe is a high for more than market rate because i sell them for cash in my local City and then when we get a mini dip i buy back in for cheaper. It has worked for me so far and i will continue to do it until there is no money being made by doing it but there 'should' always be opportunity's while the whales are playing. Buy low sell high the gist of it easier said than done..