So with the current peak on Bitcon, Ethereum (and nearly all of my alt coins) is it wise to:
1) Take out the profit to either bank or reinvest when there is another dip
2) HODL in the hope that it keeps rising and rising
Taking out the profit and reinvest to another altcoins is one of the best thing we can do for this matter actually.
Though, hold is also good for this as long as you know what coins you are planning to hold in the long term.
But in terms of practicality it is still number 1 is the best for this.