however, the problem is this.
You sell at $30 back in 2013, having bought in at say $15, pretty nice right....
but say you the see the market go to the $212 and wait for it to return to $30 ish....or even $45, and it never does, get to say $70 (this is sorta close to what it did in 2013).....
Then you never buy back in until its back in the hundreds, of even $170 after the $1K high, you have just lost out much more in absolute buying power as well as % profit than you have ever made on you 100% return 15 to 30.
To illustrate, If sell at 15k, then it goes to 100K in a year or two and have been waiting to drop back to say 5K or some such.
The upside risk seems to outway any trading you can do in the interim.
This is compounded by the novel aspect of BTC, so usual rule even if they did work, really don't work here.
So then how to successfully trade? I can not see a way, you are forced to HODL and draw down from a level where you don't mind not haveing to buy back in.
So if you wan't say 100K, then you can draw down on any amount at or above that level, and be ok.
this seems to be consistent with the s curve adoption and price theory of the BTC tech ( and other tech curves)