I totally agree simple is better. I like your approach of taking away the run up until you get the reach back and snap mastered. I would defiantly say going to a field and throwing is a great idea, but don't over do it. Throw for awhile in the field, and then go play a round, or do some putting, or work on some upshots. A varied routine is better, and also more fun. That's why we play this silly game right to have fun.
One thing I do, and I know a lot of others do as well is take a towel grip it and practice your throwing motion at home to get that nice snap with the towel.
I hope to see you out there Karen way to stick with it.