The 50% sell and 50% hold strategy is indeed very good if you are an investor,
because if the price drops after the pump, then you can buy it again, and you can certainly get more coins like you do Staking.
Your strategy is good if you use pumps and dumps of meme coins, but meme coins are very sensitive because it's just community hype unlike common projects which grows out of the utility and usability factor of coin holders, so you should be careful buying shib coins even if the price is lowest.