HI,
I plan to work on Arduino, to see if a GPS is able to drive my boogie.
10y ago I ve seen some project on RC car,
It will be interesting to share the dev here .
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I think there would be quite a few people interested in this (myself included 
)
Even better would be to integrate with Ludwig’s BRERemote (uses the arduino platform so maybe possible?) or a similar open source remote - that could keep the project scope a bit smaller than doing a gps remote from scratch.
I have considered setting up a tow boogie with ardupilot rover/boat mode.
Should be somewhat easy to set up und flight controllers are reasonably cheap.
This would add PID controlled steering, GPS return to home / loiter.
With failsafe’s you could probably even prevent flipping over in choppy conditions.
RTH should be easy to modify into follow me. Should not require more than replacing GPS coodinates.
But I never found time to try.
I have played around with this a bit and I found that all the flight controllers require some new protocol for the signal, I.e. proshot, dshot, etc… I didn’t have any luck using PWM/PPM. There are some libraries in Arduino for it, but I could never get them to work properly. I would love to see someone with more experience really give it a shot.
I will tell you that since I have gotten really comfortable controlling my dual motor boogie while riding waves, I prefer manually steering it to keep it exactly where I want it. It’s not hard, just takes practice, so I quit pursuing a GPS solution because no matter what it only works as far as the signal reaches from the TX to the RX anyways.
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That’s good to hear - the idea sounds good to someone like me who’s not tried a steerable tow boogie yet 
my idea would be to send the gps coordinates by SMS via the gsm network.
the boogie will therefore head towards the point, arrived at the destination, the signal from the remote control takes over.
i have already tested the sms part, any smartphone can send a gps text.
The sms reception part is very easy on arduino.
we will see for the rest, i will do tests on a toy at first 
You really should check out Ardupilot.
Sounds like it has everything you are trying to do already implemented.
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