What is a decent amount of Bitcoin you should have to make day trading worth while?
For me, as I trade I put all my money 50% for Bitcoin and the other 50% will be trading for altcoins, but of course I only use 10% per trading different kinds of coins.
In trading as long you know how to manage your wins and loses it is okay or any amount could do. You know how to managed you funds or capital at the end you can gain profit. But take note, always spread your investment not focus only in one coin.