Cucumbers, squash, pumpkins…. they all pollinate the same. Pollination by hand should be done first thing in the morning. Female flowers have a potential cucumber or squash, males do not.
Pollination can be done several ways. Use a Q-tip or a small brush and take the pollen from the male flower and gently touch the female flower or physically remove the male flower from the plant, remove the flower petals and use it to pollinate the female flowers.
If the squash falls off it was not pollinated and you get to try again! For the record as of now (2015) I do not hand pollinate .