Thanks to everyone who participated.
Seems that buy and hold is the winner.
This question is part of a research to build a new product, if you'r interested (as advisors, full-stack engineers, product designers) email me at :
mourad0benmahmoud@gmail.com Also keep participating and sharing this survey :
https://cryptoinvestment.typeform.com/to/wvQQyZPS : i'am new in the crypto community, built product in other sectors, never received this much participation and enthusiasm anywhere else, now i understand why crypto is meant to succeed.