Well, I've sort of tried combining the idea in the OP of this thread, and the barley grass idea. I soaked 179 heavenly blues for 12 hours or so in about 50 mL water, then strained tiat off into an amber glass bottle which was kept closed and refrigerated while the seeds sprouted for a day.
The seeds were then soaked for another ~12 hours in 100 mL water and strained once more. Both the original soak and the second one showed some fluorescence with the "UV" spy pen. Both soaks along with some additional rinsing was combined in a glass with 10 g of powdered barley grass, 160 mg ascorbic acid and a teaspoon of kelp powder (just to make sure it would be somewhat revolting

), stirred thoroughly and left in the refrigerator for 30 minutes.
After this resting time, the contents of the glass was stirred once more and then consumed fairly promptly, rinsing the residue with further fresh water and drinping that as well to ensure that as much of the likely minimal dose as possible was got down the hatch.
After about half an hour, a bowl of muesli was eaten due to incipient hunger. About an hour after consumption of the 'mixed beverage' there was a mild stimulation with enhanced acuity of vision.
After a further hour there may have been a slight psychedelic edge to the mindspace, although that equally may have been on account of the lateness of the hour. Conclusion: ±/+ on the Shulgin scale. The enhanced visual acuity was unmistakable, probably worth trying with 300 M.G. seeds, or fewer if one were to crush them up for a more thorough extraction.
It seems possible to save the soaking water for consumption and then just plant the seeds - with this method there are currently 156 potential plants potted up and waiting for the weather to warm up a bit, sat in the corner of the conservatory. Ideally, each one of those will produce maybe a hundred or more further seeds (6 seeds per pod, 16 - 17 pods per plant seems wholly realistic). If even 100 plants survive, that could produce 10000 seeds. Then it will be possible to ascertain whether Stahl's claims regarding the barley grass method requiring HBWR rather than MG actually hold any water (he doesn't mention whether he'd tried any different batches or varieties of MG afaics, and the alkaloid profile of these plants will vary according to geographic region, etc).