SWIM does a no boil tek with his bridgesii. Seems very potent, giving him excellent affects from 6" of bridgesii and a 3mls of a 5g/ml caapi water based extract.
He just puts the powder in a bottle, heats up water to boiling, lets cool for a few mins, then pours it in and shakes to completely emulsify the contents.
Swim thinks this could also work with just warm water or even room temp water, but cold is tricky, and you may want to add an acid in any tea you make cold hot. it helps the water separate from sludge and extract alkaloids.
You can add ascorbic, citric, fumaric, or any other foodsafe acids in the proper proportions as desired.
After a few hours swims cactus sludge falls to the bottom and the top can be poured off into another vessel to decant further and collect more pulls.
Repeat the process as many times as necessary, swim goes by color, pulls will begin to become transparent instead of murky green/yellow.
A herbal percolator would also be an excellent method to do a no boil tek.
Once you have all your pulls decanted you can filter with a cotton pressure/vacuum apparatus. Very easy to ghetto rig and works quick and easy. SWIM likes to wait until his tea is reduced a bit though, not enough to lose any actives to precipitation. Just makes it much easier to only have to filter 2 cups v 2 quarts.
Then swim reduces as much as desired only at a low simmer never boiling, usually until something starts to precipitate out, but reducing further is not detrimental as long as you are careful with the heat.
At this point SWIM adds some water based caapi extract, but is very careful with the combo.
Good luck.