Once you have ran out of prayer potions, make sure to keep an eye on your prayer, and stop attacking new aviansies somewhere around 20% prayer remaining (10-15 points should last long enough for you to finish off any aviansies you are still attacking)
Finally, when you have finished up your aviansies, round up any remaining drops you may have on the ground, then teleport out or run back to the rope and climb out, running to safety.
Now you can either smith your addy bars, or take them to the grand exchange where they will fetch somewhere around 2.3k each. I usually get about 175 kills per load, with between 130 and 200 bars, as well as between 50-100k in cash from alchs, and lots of miscellanious runes and herbs.
If anyone is interested, I can post up a few drop logs for reference.