Arena Rascal Pro 4.5 / 980cc 4×4 atv. Just received machine yesterday. Assembly was simple and straight forward. Quality of build looks excellent. Took 2 hrs. each to resurrect two Class I sand full size dressage arenas. We had just been using a chain tine drag for years. Compaction got the better of us. I am very pleased that it took only 2 hrs each to break up that “concrete” under footing. Now it is nice and soft. I’m g0iong to guess that it may take 30-45 minutes to do a “routine” maintenance, if the ring is empty of jumps. Since most all parts are put together with removable pins, there is a certain amount of benign rattle. You do need a 4×4 ATV if you are going to do any heavy work (driveway maintenance or resurrecting a compacted arena. Routine regular maintenance probably does not need 4×4. 5 MPH seems to be best speed of pull. I didn’t try the flat blade My job was initially too tough. I also used quite a shallow angle of attack for the ripping teeth. This thing is doing the job we needed it to do.