Per Steve Landis:
"Down tipped blades enter the water sooner for immediate response during
quick play boating moves"

If you click through all the paddles you'll the orientation at the top
of each page.

Yeah, I saw that... but I don't comprehend the meaning of
"down-tipped". Sounds obvious, but when I look at the blade
questions arise....

Seems logical to print "Left" and "Right" somewhere on one or
both blades.... OTOH, maybe they tried that and users felt their
intelligence was being questioned.... -)

--
PeteCresswell