I'm paranoid about overflowing buckets! I find I've got a couple trees/taps that are good measuring sticks for what's going on in all our buckets. If the telltale ones are getting full I know it's time to go out and do a collection from all of them. It's been pretty reliable! I think tomorrow morning may be my next collection. After that, the weather is looking scary. Warm days, but nights above freezing, too. I hope it doesn't end the season??