Hammers At Support and Resistance, Baby. keep that on the downlow though...lol. plus a few others of similar simpletude.
I use one setup trading one market (NQ). That allows me to focus better on what the market is doing and also allows me the chance to really get a feel for the market and the way it trades.
At least 2 setups (strategies). Just in case the market condition has changed, one for ranging and one for trending markets.