Lollypop....you are correct, sir.
In the book "Bucktails and Hoochies" by Bruce Colgrave and Jack Gaunt (first printing 1971), on page 90
the Radiant Squirt is mentioned.
Quote:- " One of the hottest hoochies used in the last two years has been the "squirt". This is a hoochie which is small in diameter, about the size of a needle-fish type bait. The most productive method of rigging the squirt seems to be the double-hook setup. Two "up-eye" hooks, size 2/0 or 3/0 are best for this rig. These can be purchased in most sportingoods stores under the name "Radiant Squirt".
SteelyDan:- you could try Tyee Tackle in Campbell River for mail-order. They are on the net too. they carry Radiant hoochies and Radiant still sells the mini-plankton. One version is their mini-plankton with a spinner in front of it. It's called a "Slam Dunk". They sell them unrigged as well.