i used to rely on a system of trendlines and price projections to find out trends on higher level charts and then return to the lower level charts to find out support and resistance where the market would likely be able to turn in the direction of the main trend. This system was good, and although more efficient than it's oscillator and indicator peer, had to involve many calculations, susceptible to mistakes.
For instance, i will give you an example.
You can use a trendline on a 60 min chart to indicate the trend. If it is, say down, you would look to sell rallies. Now, on the 15 min chart you would expect a breakout to the downside of a trendline, after price has rallied and hit a resistance pivot point, in order to play short. You would take profits at pivot lines and midpoints in between.
This is a simple example, of how you can base your system only on price and MATHS.
Of course there are qualifiers for a trendline and means to project price into the future, but all that is explained in the works of people like Tom deMark, Steve Nisson, etc.
The same thing happens if you apply a moving average on the 60 min chart and look for a RSI overbought/oversold on the 15 min to enter your play.
These two systems follow pretty much the same strategy, but the first one is pure mathematics and it plays in a more exact fashion.
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This is an example to show you that, while you are right, it is easier with indicators, the linear nature in which they are calculated is a drawdown to potential profits and also puts you at greater risk because of the fact that most of them are lagging, the trend followers, and most of them are early, the oscillators.
I find it easier to rely on indicators because i have learned their behaviour, but in an objective way, price techniques are far better.
IMHO
It ony takes getting rid of ignorance and studying hard, and after that, testing, testing, testing, trading, trading, trading, losing, losing, losing, and then trading some more... and maybe at some point start winning.

hope i did not confuse anyone.