Craig - glad to hear you are having good luck with your seed, as well. I'm up to 58 plants up out of the 100 seeds that I planted, so I'm pretty happy. One or two more have been coming up each day, but if I can hit 60%, I'll be very satisfied with them this year.
Yes, I think it is pretty standard to place the young plants or crowns in to a deep or shallow trench and then backfill with rich soil to both stabilize the topgrowth and to end up with the
roots being deeper in to the soil bed. When I transplant my seedlings to a nursery bed in a month or so, it will be in to a shallow ~6" trench of enriched soil and then I will backfill the trench to a level surface. Since this won't be their final setting, I'll place one every square foot or so. If they grow well, I'll move them to their final place this fall once the cool season returns.