I like the concept of not looking at them for a long time - this would have worked well for the last week!

Personally I'd have cashed out a proportion of each of those (say 5-20%) once they'd gone up 100%, and then again at 200% and diversified into a broader range.

Having said that, my two long terms holds (not selling any of these) for 2018 are Iota and EOS.

Excellent returns though.