Well, I guess I can post in this thread now, I just won an old meterless Yashicamat on eBay. But I have had TLR's in the past.
The trick is set your exposure for the light. You do not need to change it unless the light changes. Zone focus, something like 6 to 12 or 15 feet works well. Then all you have to do is frame, and push the button. Plan ahead, if you see some one coming that looks like and interesting subject, be ready to shoot when they come into your zone of focus.
Those built in meters are the problem, they make you think you have to use them for every shot. Us guys, & gals, who learned back before build in meters have an advantage, we never did become slaves to the darn things.