If you bury your pumpkin vines a root will grow out of the top and bottom of the vine at each leaf node. You can easily add hundreds of pounds to your pumpkins by covering the vines with dirt. It will also help the plan in the wind and help protect the vines on hot days.
Today I was burying the vines on my 1985 and 1415 plants. Found something bad on the 1415 plant however. The main vine is kinked a little. I worried about that in the cool weather we had last week. The vine was dangling in the air because it hadn't laid down yet. I had put a bamboo shoot under it to support it some, but what I did wasn't enough.
I'm probably going to have to go with the 282 plant now. The pipes will be kinked in that 1415 plant which will probably restrict the flow of nutrients in the plant and I don't want that. The 1415 plant is about 5-7 days ahead of the 282 because it was germinated a week earlier and it has slightly better color. I was planning on pulling the 282 this week, but this is why you grow a backup in the same hoop house.