Sounds about right to me, its essentially a helicopter rig using just the mainline, the 1 thing you need to watch is the fact that swivel that connects the hooklink is running on your main line so you run the chance of cracking off if it grates through the line, to combat this you can use something home made using beads and tubing to house the rig (there are a couple of threads via the search that cover this in more detail pics included), a chod bead which basically houses the rig and stops it grating on the line or something like a fox heli sleeve which has a thin piece of tubing that comes of the lead sleeve so when in carp battle mode the link slides onto the tubing off the sleeve to stop it grating.