I've grown them as well, & the trick to sweet melons is to not give them
water for a week or so prior to harvest. I was poised to have some large delicious Iroquois cantaloupes due to the drought we've had all summer. Well, the seasons swapped, & we've have regular rain about every other day for a couple weeks. That caused the melons to swell & slip from the vine. they are still good, but nowhere near as sweet as they
should be. That's mother nature for ya...I'm thinking I'm going to chunk & freeze for smoothies or maybe try a jam or something with added sugar.