Maybe you can elaborate more on what you are looking for. 

HPAT has a nice diagram they use and from that  basically 

High Key at 3500 ft over the intended touchdown point.  A/S 120kts.  Throttle closed, prop full decrease.  Turn to low key using 15-20 deg bank and for practice engine out clear the engine occasionally. 

Low key is abeam at 1600-1800ft.  flaps, gear as required, base turn at 1200ft.  Final flaps full when assured and prop full increase (for practice engine outs). 

Others more experienced than me, please chime in, but at least on the 3 different Legacies I have flown, this seems to work well and consistently.

Dan Ballin
LEG2 #286
Still building