How many fruit on a Sugar Hubbard/pruning vines
I'm growing a Sugar Hubbard (c. maxima) which is a cross between a hubbard and a sweet meat pumpkin. It currently has three large fruit and four smaller ones. Should I prune the end of the vines to keep more fruit from forming and to let the focus the plants energy to the current fruit? Each fruit is supposed to weigh about 15-20 lbs.