I've never grown a clone before. If you have any tips, please let me know. I went to one of the local grow stores (an advantage of growing in Denver) and got myself educated on cloning and got some rock wool and Clone X rooting agent to help get the plant rooted. I'll then keep the plant under the lights all winter and then plant the pumpkin plant in the spring to use as a pollinator. Cloned plants I don't think can grow big pumpkins.
I wish more growers would do this. It is a massive advantage to know what a pollinator can grow before pollination. We would push the genetics much farther this way if more growers would grow clones and use them as pollinators.
Here is a video of the 2008 pumpkin: