Apples in many stages of bloom

I have found that this year with one day at 87F and the next day at 50F my apple trees are very confused. This confusion has some of my apple trees still sleeping deeply, yet others are waking up, and still others are at various stages of bloom. With the Dorsett variety being the first to wake up and having many blooms before the Anna slowly deciding to come alive, cross pollination has been varied at best. Some fruit set has occurred, however it is very light at best. I could take it upon myself to make a trip into the orchard and make things happen by doing the work of the bees and use a feather or some other device and force the issue, but that is not my style. After all I am not doing this for a living this is just for fun and if my apple trees don't get a heavy fruit set then I guess that will have to be.