Rivers did it often, most of the time getting slammed to the gound before he could come close to getting his shot off. Everyone here says that he doesn't have a leftr hand so how else does he get a right hand shot up going left. By the way, sneaky is good, Kyrie is nothing but sneaky. As for elevation, Marshall, Kyrie, Hurley, Ferry, Laetner elevated? Vladie elevated? If a guty has even three inches on you and has hops, you try to shoot that lefty finish and it gets blocked, period. You tell me a single time you say anyone succeed at it this season, actually even try it.
By the way, the sneaky move is actually common place on all levels and, when they are/were not dunking, Kobe and before him MJ finish[ed] near the rim with their right in much the fashion I describe. You see the same type move on baseline drives from the left or drop steps from the left sidewhen someone drives baseline from the left side, or drop steps and bounces (Hansborough is far from the only one who moved the ball around in the air, sneaky like to avoid the block and/or draw a foul. And, if you want to move the ball around, try doing it with your off hand.
You usually see small guards using their right not their left when coming from the right side of the circle, having beaten their defender and bringing the ball up with their right hand as a big defender comes from their right. You want an example? Curry and his older brother, but there are many others who finish underhanded at the front of the rim with a defender coming from their right. Sneaky? It's physics and playing off how shot blockers go about trying to do their thing.
And, if you don't see suich finishes more it is NOT because players are using their left hands; it is because even small guards who are built powerfully and/or are tricky and quick off their feet, get way above the rim and throw it down, almost always with two hands. Their quickness and explosiveness off their feet make contesting such dunks almost always futile.
As for a lack of big guys back in the 60s, Russell, Wilt, Walt Belemy, Willis, Nat Thurman, Jerry Lucas to name a the pros who come to mind. They all played in college, as did lots of other seven footers (the Ivies had two when I was at Cornell), and many, many 6'-7" to 6'9 shot blockers. You take the pros I mentioned and they make the current lot look like school yard kids when it comes to guarding the rim. And, in addition to Earl, think Elgin Baylor who invented the move we are speaking of and trust me nobody got a piece of it.
And, if high school players were shorter in the sixties, 6'4" to 6'5" guys with hops and amazing coordination were commonplace. They had something like 6 to 8 inches on most guards, and 2-3 inches on many forwards. Larry Brown was going up against Art Heyman and lots of other leapers his size on Long Island, including a guy named brian McSweeney who captained UNC in '63 andplayed alongside a sophomore named Billy something. Believe me, while Billy could jump, there were lots of other guys in Brooklyn when he played that could get up themselves, most of whom never went to college. The game then was, however, played abelow the rim, the refs actually called fouls when a guy creamed an offensive player after a clean block in the air, and they even called walking when guys finished, which I have yet to see happen on these strolls often taken when these players dunk--there was no such thing as coming to a jump stop and being able to move both feet before shooting like there is now.