I’ll add some things:
Fish your fly the same way you fish your lizards (or whichever conventional lure is working for you).
Many times an otherwise successful bass angler will pick up a fly rod and completely change his presentation just because he’s using a fly rod.
Take a 6X streamer hook…tie a leech pattern, a bugger, or bucktail streamer on it, then fish it just like you would whatever bait you’ve been successful with on conventional tackle.
If you are a conventional bass fisherman, you already know that a 4" bait is considered ‘small’ or ‘finesse’…keep that in mind when you select your fly patterns.
Using two flies is always a good bet when bass fishing. Putting a big fly BEHIND a smaller one can stimulate the competitive instinct and get you some amazing strikes.
Bass can be triggered into striking subsurface baits just as they can be triggered into hitting topwater baits. Fast movements followed by pauses are the way to do this. You can’t ‘strip’ fast enough to do this during the summer, so use your rod tip to get more speed.
Bass are not always subtle when they strike (if you fish topwater a lot, you already know this). Most novice subsurface warm water fly fisherman worry too much about detecting strikes and not enough about triggering them. Watch your line and pay attention to how the line feels in your hand and you’ll be fine.
What your fly looks like is less important than how it moves. You can catch bass on a black leech patttern anywhere anytime, IF you work it correctly…which only the fish can tell you…kind of a catch 22 but much of what we do is.
Keeping your bait in the strike zone is more important than keeping it ‘light’. Use weight if you need it. Most fly fishermen use too little weight on subsurface bass patterns, not too much. A bait stopping and then dropping quickly is a trigger…a bait gliding along? Not so much.
Fish really fast really slowly…make your fly move fast for very short distances with longer pauses. Much more effective than slowly stripping in the fly under most conditions.
Keep your bait wet. Better to make shorter and quicker casts than long ones that require lots of false casting.
Stick with what works. If you find a fly that works for you, use it. Bass aren’t all that fly picky, and the most important thing in your favor is angler confidence. Better to work on changing retrieves than changing flies.
Good Luck!
Buddy