i know, jigging is always the way to go when it is a day like that. it's funny you say the bite switched like it did.I gotta chime in here on this one.. I've had some of my best days jigging in the mid-day bright sun.. a stable barometer plays a role as well-- especially deep fish. they don't seem to care whether the pressure is high, middle or low.. as long as it's stable.. a rapidly changing barometric pressure will button their lip-- especially going up-- but once it stabilizes, they're on again.
It's only one of the factors involved in whether fish bite or not, but it does play a role, and depending on the situation, it CAN be a large role..
I use this link quite a bit 5 DAY BAROMETER ... I'll come back from a trip and lets say the fish quit biting for no apparent reason at 2:00pm.. more often then not the pressure will have changed rapidly right on the mark about 90% of the time.. after years of doing this it's more then obvious.. Save that link and try it for yourself the time scale is GMT so you have to do -4:00 hours for the east coast..
i come back weatherunderground.com and i look at the same chit. but, next time you go (like you ever have to remember a banner day) and see if it jumped up and down, tell me what you saw in that instance. some of the boat fishing i've done has not been effected the same way. deep water does not involve the same qualities where i am fishing. i have 2 or 3 deep water spots from shore to fish but not the deep water i'd prefer in a boat on bluebird days. how deep of water and "well, can't say where but, pm me as i never put that aspect of it together in any deeper water to get a bead on the phylosophy behind that movement.