That is just pure trading and you run the risk if u sell at 100% and it ends up going further meaning you could have got 500% or more.
This pump and dump scamcoins are feasting on greed, you will lose this game going this way.
By selling at 100% or any profit - let it be 1% - you are not risking anything and you can bet with the money you have made continuing this safe route instead of risking losing it.