Looks good, Cris. Just make sure it can't vibrate loose and do a nose dive into the sand
I'm going to try and make a small platform that's held by springs in each corner to see if I can reduce a bit of the vibration - particularly when I hit clumps of seaweed. Kingston beach was a little corrugated in places last year which made filming from the back axle a little bumpy. I'll post a pic and some results of the spring mount when I get it built. Could be a complete waste of time but you never know.