For what species? May be a decent general guide but weather plays a big role. Also if the lake is shallow or deep. 62-65 degrees is a pretty good guide for any of the three bass species. Some people put alot of stock in moon phase too.
Leave those bedding bass alone-would you want someone coming in your bedroom when your in the middle of it?
It is for bass, and it is not just a set map, it takes into account weather and so on. Kinda cool to look at, and good if you are planning a trip elsewhere to fish. As for bedding bass, I fish all through the spawn, I dont target bedding bass and don't use lizards or salamanders, though I proabably do catch a few, if you fish during the spawn it will happen. Just get them back in the water ASAP.