hasn't been a Hoverboy figure made since the one for the HOVERBOY/METAL
GUY ACTION HOUR in the late 1970's,
so I guess this Comicon Exclusive Muppets
figure by Palisades is as close as you're going to get.
figure looks to be inspired by not only Hoverboy, but The Rocketeer
as well- which was inspired by Republic Serial's KING OF THE ROCKETMEN, which was a character created when Republic couldn't come to an agreement to option Hoverboy in the early 1940's.
bucket looks like the post-War era Hoverboy, with the speaker on
the front. But it also has the handle, which didn't start showing
up in the comics until the mid 1950's.