Whats the method?
Rock Lobsters only have 15 health on this server which makes them ideal for getting charms as they have always been the go to spot for getting charms on other servers.
Stats recommended
43 pray
60+ combat skills
Items recommended
Range, Mage, or Melee equipment
Prayer Potions
Charming Imp would increase speed by a lot but costs 100k dungeoneering tokens
How to get there
White line indicates where they are located. Red line starts at teleport location.
Strategy
Start where red arrow is and kill each one with pray from melee on until you get to the last. Then start picking up charms on your way back to starting spot. Rinse and repeat. Charming imp makes this method a lot more relaxed as it's hard to see and click on the charms.
I banked 99 summoning in around 20-30 minutes of doing this without the charming imp.
