How coincidental that the moves I assume you're talking about are both Side Triangle. Try using more attacks. Air tranquilizer dark gun into slamming fists is a pretty good combo for Drake. Try hit Basic Triangle and Circle for Radec. They work wonders!
Thanks man, I'm quite good at playing with drake but his side triangle move is brilliant for herding people together so you can use his level 2 to best effect. It just seems a bit crap that I can't hit sly on a level field.
To tell you the truth, I only use Side triangle on the ground after I throw an oil tanker and if someone trips over it, otherwise I only use Side Triangle in the air. It's awesome in Alden's tower! Use the GAU or Run n' Gun more than you do the Eagle. You'll do much better
side square nets a good amount of AP,
grenades are good to net some AP if other people are clogged up,
flamethrower when they're getting close to you,
i like to use radec 'cause having guns in a 'fist fight' is fun as hell....