Man, I see groundies as a WHOLE lot more than rakers... although I agree raking is a developed skill that requires attention.
If you want to attract pro groundies to a comp it neeed to be something more substantial than raking. The rakemaster thing seems almost like the equivalent of powder-puff football.
The groundies I know pride themselves in being fast to react, they tie great knots, they can land swinging wood of any size in a small, neat pile, they are STRONG as powerlifters and can pitch big rounds into a gated chip dump, they can talk to customers and passers by, they can make short work of big stumps and limb and buck whole trees in a few minutes... there's more but you guys know what I mean.
They do more than raking twigs.