I own an RPM Range and just recently tested the Dice of a friend for a day. I must, say, I am quiet impressed by the Dice. Given, that I would probably not buy it as a total beginner, as the kite does need a intermediate hand
However, I found that unhooked you don't need the speed of the RPM. Instead it can be flown a lot more like a proper C Kite, with lower speed going into the unhooked jumps. Thats actually the reason why I was impressed, because usually a kite is either very good in the waves OR very good unhooked. Example for great wave performance and bad unhooked power is the North Neo. Anyway, I am seriously considering a change from the RPM to the Dice.
I am not sure, if you can fly the Dice on single front line safety, I will try it soon tho like this: 5th element bar at hand, and SAFE, big beach no people environment with heavy help
Simply attaching all lines like normal, but attach the 5th line to one of the frontline positions of the Dice and removing the now obsolet second frontline. That way you would have a single frontline safety to try. Bear in mind, that you might need to remove the stopper ball above the Y in order for it to work.