Please describe the system you have now. Is it a wide hoop mounted on the front of the mast? I had a 5.O and never felt the need for a rotator, but the one on my 5.5 uni was really nice downwind. It sounds like maybe you have yours rigged with two lines rather than an endless loop that can be lead to the high side and cleated from there. The trick is to uncleat just before jibe, move back on the boat to jibe, then rotate and cleat the mast from the new high side when you get there.
Good luck