Extracting in the open can lead to disaster. When colonies get desperate for honey or nectar, it can set off robbing to a degree that will shock you. And I might add... they aren't very freindly about you being there either. Leaving the honey gate open on your extractor and letting it drain and filter as you strain is a good idea. Get a food grade 5 or 6 gallon bucket, fit with a strainer, and install a honey gate. Then you can go 5 gallons at a time without having to jump back and forth. It's a minor expense and adjustment, but saves time in the long run. Then just bottle what you need. Later, if you have problems with granulation, its much simpler to throw the whole bucket on a heating pad, than warming all those jars.