"Getting there" with Salvia

[dave-o]

My sloth tried Salvia a number of times about two years ago, but got so frustrated with it that he gave up trying.
He's quite quite heavy (220lbs ish) and i believe is what what some people call a "hardhead"; i.e. it takes him a lot of anything to get anywhere (3 bottles of wine or 1/2 a gram of K at a time).

His various attempts to enter the Salvia dimension have all been failures. Here's what he's tried:

-A quid of basic high quality leaf. As much as he could fit under his tongue. He kept chewing/holding the leaf for as long as he could before he thought he was going to be physically sick from the rank taste (probably 1/2 an hour). No effect
-Smoking 10x extract (through a home-made bong). This was just after he gave up on the quid. He managed to have about 3 hits, which he held for as long as possible, before he just didn't feel like smoking any more. There was a vague feeling of his head being pulled backwards, but nothing really to speak of.
-Ingesting: My sloth ate the rest of the leaf he had left over from the previous attempt. It was a bit less than 250g. No effect.
-Drinking home-made extract: My sloth did an extraction on 250g more of leaf, and drank the result. Nothing.
-Serious extract: My sloth got frustrated and bought a bag of 40x extract. He managed to smoke 2-3 hits before he lost the will to smoke any more. There was a definite effect; my sloth felt like there was a secret funfair just behind him but he couldn't quite turn around far enough to see it. But this only lasted a minute or so and wasn't really what he had hoped for. He tried this a few times to similar effect
-Quid of 40x: Poor slothy was really frustrated now and put the rest of the 40x under his tongue. He tried his best to keep it there but the taste was absolutely horrific. He had to spit it out after maybe 10 minutes. The taste remained for hours, even after tooth brushing. Yuck. Minimal effect.


So, does anyone have any tried-and-tested ways to "get there"? I think the problem is that it's very difficult to take enough of the stuff in a short enough time to push oneself over the edge.