Stepped Planing Hulls/small sailboats

Does anybody have any knowledge of experiments utilizing a stepped planing hull on sailboats under 20'- particularly with reference to the Plum stepped hulls?
I know that Yves Parlier built an Open 60 planing cat using stepped hulls combined with rudder hydrofoils.Parliers steps were large "traditional" steps but it seems that there might be gains possible in adapting some of Plums work with small steps to planing sailboats.
Any thoughts or info would be greatly appreciated!

[gggGuest]

IIRC there was a Moth design back in the 60s which had a very small step aft. My very dim and shadowy memory suggests it was an influential design in other ways but not in that one. That was when they first started going thin (by those days standards) with wings. I *think* may have been Nervous Breakdown design.

From what I understand of these steps they can be quite small and still have a big effect in wetted surface reduction and in facillitating early planing. It appears that maybe they could be incorporated in such a way as to be retractable. And could possibly be used with a rudder hydrofoil instead of the original Plum type foil....

[ken61137]

Boatek in the mid 90's did a stepped hull with a wing sail. It was unique in that it had an air intake venting out into a reverse v step so the step was running on foam
Unfortunately Bob Quinton has now passed away but his wife as far as I know is still keeping his web site active