To size up I like to hedge the rotation points then collapse each hedge leaving an equal core directional position in it's place when I think each retrace has run out of steam.
For example, AUDCAD position below shows reversals.
For mine, FX operates on all frequencies (Low, mid & high) and I find the FX mid frequency (sub hourly) far too volatile to trade.
To your comment about looking at the lot, I tend to start at the monthly and zoom into the weekly, daily, 4hr, 1hr, 15min then 5min to find an entry point (I often buy on the 1min). I'm a scrooge when it comes to leveraged positions
Price at posting:
1.3321 Sentiment: Sell Disclosure: Held