Sand, field or drag harrow for behind model RC car

I have tried modeling a field/sand/drag harrow for towing behind my Traxxas Trx4 Defender, just for playing around on the local lake beach while my son plays with his rc boat. It turns out quit fun but could be improve upon. First, it needs weight. There is in total over 70cm of iron rod on it. Otherwise it would jump around and do nothing. 

To make it work, print both parts twice, but don't forget to mirror each of them once. Both models fit on a Mini+. After that, just superglue them together, add a few hooks in the holes and attach a cable or cord. I used a miniture steel cable. I did my best to paint it but after a few hours driving in the sand I noticed that was wasted effort. 

Have fun!