2) Late spring is the best time of the year, followed by early summer - this is the best because it is the easiest time to catch them shallow, they have either just moved up to spawn, are spawning, or have just finished spawning. For people who like to fish deeper and offshore right now is great and getting better. Some guys on my local lake have been wacking huge bags of smallmouth finesse fishing deeper right now.
3) Partly cloudly days are best - clear sun is the worst - clear and sunny just means if there is a bite it will probably be deeper, especially in clear water. Cloudy makes a shallow bite more likely. My personal favorite is overcast and a small breeze, but that doesn't mean there aren't ways to catch them when it is clear and sunny. If you're good at fishing cover, a sunny day should help you as the sun comes up and gets brighter the fish are usually pinned closer to cover.
4) Good spots are generally good and unproductive spots are unproductive - it's not worth "patterning" a certain type of cover - on my lakes, a few docks are good and the rest are bad, etc., you actually have to know the "good" spots to catch good numbers of fish - trying to establish a "pattern" will cause you to fish lots of unproductive areas - there is a reason why some of those spots are good. The certain docks that are good aren't just random. Nothing is ever just random. There is always a reason why (nearby weeds, bottom contour, etc). That is why you can pattern it. If you have a lake where you know certain spots are good, find something in common, I guarantee you there is a reason.
12) A 3' or 4" grub on a simple open hook jighead will catch a few smaller fish in rocky areas - but it's not that productive - there are much better ways to catch fish in rocky areas, and I'm assuming you're talking smallmouth here. Hair jigs and tubes are amazing.
13) The following lures have been a waste of time: spinnerbaits, swimbaits, hard jerkbaits, poppers, jitterbugs, shakey head worms, large power worms, most lizards (unless they have chartreuse tails), sweet beavers, plastic toads, any type of carolina rig - jerkbaits are the best thing in the world when the water is 40-50 degrees in april. You can't just rule out all baits like that. Just because you haven't figured out a situation to use them yet doesn't mean they don't work. I haven't learned how to swimbait fish well at all, I don't particularly like them, but I know they work amazing if used at the right time and place.
I didn't comment on every single point, just the ones I thought noteworthy. Everything is about a time and place. If all of the diff baits didn't have their time and place, they wouldn't be used. Excuse the bold font, I wanted to differentiate without writing inside a quote. TIGHT LINES!!