Practice & learn to use iron sights, period. Laser dots are auxiliary sighting devices, they're (IMHO) never intended to replace iron sights. Batteries die, lens break, screw strip & systems fail. Iron sights are anvil tough & low-tech reliable. Yes, lasers have their place & CT are among the best. When shooting from behind cover or from the hip on your back? Lasers (pardon the pun) do absolutely shine. But I DO NOT want to slow my response to a deadly threat by looking for a little red dot against a red plaid shirt when putting my front sight squarely center-mass will do just fine. Most defensive shootings are at bad-breath distances anyway. And a number of well-respected instructors tape off lasers & sometimes even sights to make that point clear.