I had a share in a C150 for several years, up until a little over a year ago. The flap position indicator was somewhere above my left shoulder, which is horribly inconvenient, so once I got used to it, I used to pretty much estimate the flap position by looking at the flaps themselves until I had time for a quick glance at the indicator. This was easier, and after all, does the difference between 27 and 30 degrees really matter?
So...downwind checks, check carb heat and leave it on. Turn base, reduce speed to 70 on the outer scale of the ASI (ie mph) and select around 20 degrees of flap. When on final, select around 30 degrees of flap...or sometimes I left it at 20. Slow to 65mph over the threshold. Leave carb heat out till after landing...nearly had engine failure on short final once after pushing it in!
I used 40 degrees of flap once just to see what it felt like, and to make sure I could. It was...interesting.
I did a PFL once varying the flaps as I went, ie using them a bit like air brakes, again, to see what it was like. Seemed to work pretty well.
A go-around is OK if you decide early. But for a late go-around or touch-and-go you have to put in the carb heat and hold the flap lever up and push in the throttle...and you tend to run out of hands, unless you have a convenient co-pilot to help. It was never a real problem, but slightly awkward.
That's about all I can think of.