Applying the fib spiral we are able to see that once a bottom is in for BTC the widest points of a fib spiral can help us time our trades during a bubble. Its helpfulness is somewhat limited by not knowing for sure that a bottom (point 1) and break out has occurred (point 2). However if a new all time high is achieved then setting a line (point 3) at the outside edge of the spiral may provide you a optimal exit time.
on a side note, if my timing is correct the peak of the run would occur at or right before halving, depending on when that date actually occurs. At the time of publish 7/16 is the estimated halving and I'm projecting a peak late June **if** we see a btc bubble.