I make it with a 60 degree climb upwards, level it out, make a "cutback-esque" inversion, (i.e. Right half corkscrew, right half corkscrew) and then drop on the other side 60 degrees.
However, a thought, on steel twisters, do a 60 degree climb with a twist at the top, then do a half barrel roll, then do another half barrel roll the other way. (I.E left half barrel roll, left half barrel roll) Then twist and drop 60 degrees the other side.