Let's take a look at a very run, last year's GDXJ chart. The chart shows some of the dips along the way.
Can you handle -20%, -30%, -50% dips along the way? Add onto that the uncertainty of where the move will go. And when you open yourself up to a 30% decline, you've thrown risk management out of the window, and are vulnerable to panic selling.
With the benefit of hindsight, we see a 200% move in GDXJ resulted in a 1300% move in JNUG . Few, if any, probably rode it with any success.
My strategy will be to accumulate good miners over the next couple weeks. Some of my purchases last week have done well, and I'm holding. Some, like NSRPF, I had to take profits early due to a sharp move.