I have perlicks too and have taken a short piece of 1/2 in. silicon tubing (about 6 inches) and piece of clear thick wall tubing that fits snugly into the silicon tubing (about 6 inches). This clear tubing will fit into a bottle. The silicon tubing then fits snugly onto the perlick. I reduce the pressure as low as I can while still being able to fill a bottle. I have only filled 22 oz bombers and 1 liter swing top bottles. No problems so far.
I did make the "beer gun" that is posted on HBT using a racking cane, stopper, picnic tap, tubing and an out disconnect. It worked great but I usually only need to fill a few bottles and do not want to clean the homemade beer gun.