If you're quite a way out and MSA/Terrain isn't an issue (and making sure you don't bust your airline's SOP regarding max vertical speed below MSA): Gear Down, Speedbrakes and maybe some flap (obviously flap for drag is bad), maintain the speed to get the altitude off before the beam gets any narrower, then reduce when/if you make it back onto the glide. If it's all going pear-shaped get the go-around instructions sorted, and then press the buttons. Establish your bottom line early on.