I understand that holding will give you the most parabollic benefits out there but I also enjoy trading a lot, and I think it is necessary to keep every coin alive, I would separate a small or big amount depending on your economy only to trade, while keeping your portfolio intact, this is the best approach I think.
A strategy that most of us are doing is called the buy and hold which involves keeping and investment over an extended period, anticipating that the price will eventually rise over a period of time, but with that it also requires patience and careful decision making, 'cause an investor generally making decision based on the history of a certain coin but for those who wanted an assurance to their investment then do holding bitcoin for a long time.