The thought of a backpack battery unit is hilarious. Cable bundle going down your leg into the mast. I love it lol.
Also the most dangerous thing on this forum.
Q: “Hey, where did that guy go when he fell off that efoil?”
A: “Straight to the bottom.” 
PFD, fire proof case and sub 3kg battery and the risk is gone… I was proposing an experiment, not a 14s14p backpack hahaha.
I suppose I could strap a mini case to the nose of the board…
I wanted it to be as purist as possible. You don’t need more material. The batteries are directly in front of the mast. This results in very good maneuverability. It is lighter and more compact. This makes it much more transportable, of course.
I have the complete board including foil and the propulsion unit in a small wakeboard bag. It makes in my eyes just no sense to build it longer unless you are too heavy.
This 99cm efoil board designed by Volker akka @V_S relaunches the challenge.
The takeoff is worth looking at.
19,5L (30kg/m3 XPS)
And no Box, all components inside Board. Build link
99/48/6cm
Left: 118cm Right: 99cm
What the dimensions of the board?
my small size board
Very nice! Do you have some specs for us?
Nice Submarine as well 
Can you share the size of this beauty fat lady
Nice but I would like to see the minute just before this 
112x60x10cm. volume is about 50Liters
You can watch there Alexander Svetlakov on Instagram: "eFoil riding first person view. Board length is only 112cm, smaller than fliteboard ultra and lift3 4'2" pro. For pro riders only."
Almost same like my big one.
Seems you have a smaller wing.
Is this only about length or also volume?
That is the key question. We still talking about boards, right?
front wing is 1300 square cm
I have one nightmare version, 80x43x11cm, volume 30 Liters.
box from inflatable board, I didn’t try ride without inflatable board, I had no idea to do it. I think that any board shorter than 100 cm is not comfortable, 120cm is good size for me.
I agree. 120cm is a sweatspot of comfort, space, driveable, and compact for Transport.
Building smaller makes no sense. Only Idiots would do.
BUT: its freaking fun and challenging 
