Great tips thanks a lot
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Los españoles tampoco se rinden eh 
Mi padre es de Barcelona. Pero hace años que no hablo español…
Well done with the WeChat! I have someone who is fluent in mandarin. If you have your questions all at hand…I could ask him to get in touch with them.
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Thanks, man, me too actually tbh. But at the same time ChatGPT is pretty good at translating, I’ve double-checked with my partner, and it was approved multiple times, so now I don’t even bother asking her 
I am not too sure which esc would be better ; do you have any opinion about this?
This one should be waterproof ; maybe it could be positioned between the motor and the waterproof battery box so it would be water cooled when the board touches down.
All right I ordered the parts! Hope it comes soon
XT60 / XT90 Male & Female AMASS Connectors PlugsXT90 * 5 pairs 1 $10.00
1 Flash Deals Flipsky IP68 Waterproof ESC Electronic Speed Controller Mini FSESC6.8 Plus based on VESC6 150A for Efoil Ejet / boat esurf 1 $123.00
1 Flipsky Fully Waterproof Remote VX3 controller For Efoil Esurf ESK8VX3 Remote controller 1 $95.00
1 Flipsky Waterproof Brushless DC 6384 Motor 140KV 4400W for Surfing Boat Underwater Thruster Hydro EfoilWaterproof Motor 6384 + 4.8" Foldable Propeller 1 $171.00
I am starting with the battery build. I found a local one man show to build it. He will help me design it. We may go to 11s indeed.
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What box are you using? And therefore, whats your cell layout?
I will probably go other way around; first the battery then the case. I would like a backpack as a beginner it will be strapped on the board and maybe I will wear it if I get the skills later.
quality looks 
Finally took time to make all connections and tested. Unfortunately the mini 6.8 shows DRV fault.
I contacted flipsky for warranty…
Hiya Volna,
Just got a questiin on your plans ti connect that intergrated mast plug to your battery box?
That looks like a great set up!!!
All right here is the return of experience on this project. It went full DIY . Super cheap, super quick to build. 0 time for craftsmanship.
I basically converted my wingfoil beginner board to an efoil.
I learned along the way that flipsky bearings need to be replaced asap and motor must be rinsed and greased after each session.
Seeing every issue on the forum with flipsky remotes I decided to use the remote inside a ziplock bag at all times which proved super helpful. The remote is like brand new after one season.
Last but not least for flipsky, you must stay in firmware 5.2 with the mini 6.8 esc.
I must have done 10 sessions with the setup. I get 20/40 min per battery (20Ah takuma) so at least one hour per session .
I mounted everything at the back of the board and so quickly realized the foil mast must be put at the maximum back setting. As far as possible.
The 2000+300 setup is nice for wingfoil learning but I’m getting to the end of it now. I started wingfoil in spring 2025. I’m looking for something smaller now and also I think a 1000 or 1250 would have had less drag so more time flying maybe.
As a beginner, battery and waterproofing were the two most intimidating parts. I chose to outsource soldering to a local battery shop which proved very reassuring and cost effective (70€ for everything including a lot of advice ).
For the waterproofing, I ordered mostly waterproof parts and sunk everything I could think of in Sika flex.
I used old sailing waterproof bags I had around which worked really well even with cables going through the openings for the receiver bag (orange bag on pictures is for receiver and black for battery).
Another issue was with the 3d printer ; I ended up buying the pod from kparts. Super nice and cost effective vs buying a printer, time to learn and setup…
I ended up surfing a lot which was a real surprise and not intended in the beginning.
I will probably move to a lighter solution for next year.
If I kept this setup I would try to find something like an eye lid to screw where the back foot strap is that way it would be possible to strap properly the battery. The string was a little light!
Here are a few pics following.
