This is a way to float in IF. Im uploading a video atm, will post that in an edit in a lil bit. Its much easier to understand, so Ill do that.
But, basicall, go left frrom the griffs to the invisibler wall blockin from the great forge's lava. should be one turn befor hitting a signpost. then, wall jump up. ONLY THREE TIMES! Any more, you die a agonizing death by burnig lava.
http://youtube.com/watch?v=_sz3CqlaGTQ there you go
EDIT: http://www.youtube.com/watch?v=rFVtzUqS6S4 better one with awesomness my bud did for me.