Have you ever heard of anyone using 4 ft sections of eave troughs with capped ends for starting plants in from seed?

I'm kicking around the idea of trying it for lettuce, spinach and beets this year. I'll start my seeds in a starting tray under lights, then dig them out and space them correctly in the eave trough sections and back under the lights they'll go. My shelves under the lights are 4 ft long and my raised garden beds are 12 ft long and will hold three "troughs" of plants per row. I'll just pop the caps off the ends of the trough and using a block of wood push the whole row of plants out into a trench that I'll have pre-dug and fertilized.

What do you think?

John