Method Description, Instructions and Tips for Success

General Description

Snape grass is the secondary ingredient for prayer potions (as well as others) and so is always in demand. Waterbirth Island is the best place to gather it, though the ease of getting there depends on your levels.

At level 30 skills, I assume that you have not yet completed The Fremennik Trials, which means having to pay Jarvald 1000 gp for each trip to Waterbirth Island. If the quest is done then this payment can be skipped (more profit!)

With level 70 skills you should be able to complete Lunar Diplomacy. This lets you access the Lunar Magicks Waterbirth Teleport spell, which is ideal for getting lots of snape grass quickly.

Specific Method Details

Be sure you have Lunar Magicks turned on.

Equip weight reducing gear, a staff of water and a ring of duelling, and summon a pack yak. Take out of the bank one law rune and two astral runes, and teleport to Waterbirth Island. When you arrive, run northwest, then west all the way to the coast -- you'll see six snape grass in a north/south orientation.

First, run to the southern part of this pattern and "wake up" the two rock crabs in the area. Once awake, quickly run east for a couple of clicks and then come back -- the crabs should now leave you alone.

Pick up all six snape grass until your inventory is full and store them in the yak. Continue picking up more until your inventory is full, storing two additional ones in the yak. When done, use a ring of duelling to go to Castle Wars and bank there.

You can collect 58 snape grass in just around 2 minutes 55 seconds total, which is about 1190 per hour.