Well its depends on you... and it also depends on how much its spike out if I think the value is enough then I go for it but if not then I keep holding it..but sometimes when you thought is already been good there comes another spike but sometimes its the opposite of what you expect...I guess it is matter of timing and good condition of cryptocurrency.For my own opinion if my coins will spikes and meet my expectation price then I have no doubt to sell it for us to gain profit, rather than waiting for another chances of spikes that not really sure how big it is and when will be the exact time that it will be happen. So it is a matter of your own decision, to wait or to grab!