dozerbilder, have you operated a dozer much less an RC one ? For craps sake , it's a lil grading machine the size of a d6 maybe . They're not designed for bull work unless you put a semi-u blade on it . Ever seen a 6 way blade tore apart from doin shyt its not designed to doo ?
PS:By lil dozer , I mean in the vid you posted
to add , I'd much rather push the loose sand with my D6 and leave the rocky hard pan stuff to my TD40B (D10 size ).