i guess on situation right now,days trading it seems not profitable, except u play on laverage trading or margin, i dont see any good chance on spot trading can make 3 or 5% profit,and also,since june,market moving so wildly, the best choice is holding or quick trading like scalping.
But, right now market is falling from $9320 and the current BTC price is $9234 which means solid more than $50 profits if you are set with 1 BTC capital. Still I agree with you that we cannot catch exact peak price of today and cannot wait until bottom of today; we need to buy and sell in between price levels which means for the capital of $9000, risking for $10 or $50 may not be the worthy ones as profits are lesser than 3% as you indicated. Even in this range bounded market, we are not getting enough market movements to ride on trend.
Always I hate day trading and I do rarely look for day trading opportunities; but due to current market conditions of range bound, I got lesser options which pushed me looking for day trading opportunities. I am just paper trading for last one month to find our how good my skills are for day trading but concluding still I must stick within long term holding. So, I work on other resources to save some big capital to buy more BTC at possible dips.