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Scotty Mac said..
Phil what happens is your still effectively paddling into a bump and the water surface still has a curve in it not a flat. And the pumping rocking motion is easier done with some rocker. I found the boards with the tail bevel do this well also. Intially placed in foil boards to reduce touch down the also help getting lift off. So its not a surfing rocker but it aint flat either...
Truly I understand what you are saying Scotty Mac BUT it's what goes with a flat rocker bottom that makes a fast DW sup to catch the bump using soft round rails with a Displacement Hull with a little nose lift as in 2"-3" inches. Grab two magnets put both north ends together and they will repel thats why I love a Displacement Hull = To Me its all about getting the board up onto the foil ASAP. and if the Displacement Hull does touch the water when you are gliding it's like it repels the water.

Look at Jerremy Riggs DW sup foil it's a flat rocker with nose lift and soft round rails. A very basic board the guy gets up and gliding on a bump within like 3 strokes.
Yes there is sooo many different types of DW sup foils on the market:- lets look at a surfboard - the most convetional surfboard is your basic thruster a basic thruster is like 18" 3/4 wide 2" 1/2 thick soft rails little rocker with a double concave and a very, very sharp tail edge that you could shave your face with so you can turn hard in the pocket. So when you see good surfing going down have a look at there boards it will be so identical to the measurement I have given, the only difference would be the surfers hight and weight will determin the inches and thickness of that thruster.
Yet the millenial surfer of today rides bizzare wierd looking surfboard and they think they are ripping yet they surf like the biggest kooks.
Foil wings; there are some awesome foil wings on the market and then there are some Dogs of foil wings on the market - You could have a Dog of a foilboard BUT if you've got a very good foil wing and ability you'll get that foilboard gliding in no time for a long disstance.
I want to show you this Prone Foilboard for instance it was my very first Prone Foilboard prototype I asked Simon to shape it for me I didn't copy anybody's shape and I was in Simons face in a nice way while he shaped it for me I said do this do that, take a little more foam of here. the board has a flat rocker, soft round rail with little nose lift and a Displacement Hull 5'8'' x 20'' x 4'' = 56 litres ---- Unfortunately that board was to small for me at the time as I was a beginner foil kook when I was learning on this board the board paddled like a machine super fast and would catch waves very easily BUT I found it hard getting to my feet on this board at the time I was like 90kg. So I sold it to good mate Marty Carter who's like 75kg Marty ripped on this board and progressed through the roof BUT Marty also had an awesome foil wing on that foilboard that helps to progress faster. A few of Marty's mate had a go on that Foilboard and absolutely loved it was the feedback I got. A few wouldn't comment because there will always be knockers/haters out there. So if that type of foil-shape works great for a Prone Foil I am going to transfer that to my DW sup foil-boards.
18 months later I'm Prone Foiling a 5'5'' x 22'' x 4'' 1/2 = 70 litres but am ready to go down to a 5'3'' x 22'' x 4'' = 65 litres