Here are two Videos of the BeachRunners front wheel. One original front end, the other with a screwed-on suspension.
You can see the powerjoint working as shock absorber. I have not compared speed yet. The yacht gets about 30 cm longer,
heels a bit later and slower. The ride feels much more smooth, less sailshake.

Thanks Desertyank!
It's not a 5,6 FISLY mini anymore, more like a 3/4 class 5 . Feels more like a Yacht (more length???).
Next thing is moving the maststep forward, too much weathercocking. As I’m not into welding yet, it’s going to be
BOLT-ON…

On LLF mini and Promo mini the CE is in front of the rear axles, right?
Maybe salt or clay have a better tracking than partly soft sand...?

Yes aus230! Thats where the inspiration comes from!
Beside the front, end the Y-frame seems to cotribute its part. I can see the axles working on rough ground...

I've had a ride on an 80's class 5 (Seagull?) with a T-frame and narrow tires. It felt BONESHAKING fast, pure, pretty down to earth sand. My comfi BeachRunner was kind of luxury afterwards..