The only thing I'll add; as everything posted is tremendous, is in reference to the jigs you state you already own (all football head style) and your reference to flipping these jigs. Now this information is likely in the threads already shared, but I will make my personal point anyway.
Understanding why you throw a jig, when you throw it, where, and how is a great step in understanding jig fishing. It's also important to understand the various types of jigs so you can pair the knowledge you've learned with the what, where, when, and why with the accurate jig and presentation.
Not all anglers utilize or believe in the different jig styles in reference to their reported and manufactured "purpose" -and that's ok. You can certainly flip a football style or structure jig into heavy cover. You can certainly drag a flipping jig or arkie head style across the bottom and over objects. You could certainly hop and drag a swimjig up a rocky slope.
However, certain styles of jigs are better for certain applications (IMO). There is; or was at one point, a reason jig heads are shaped differently. A football style head or structure jig is generally meant to drag across harder bottom, while staying upright with the ability to be dragged up and over objects. Flipping jigs generally come with a more arkie, or streamlined, head for penetrating heavier cover without hangups. Swimjig heads are more horizontal with the hook shank and are meant to be swam. Casting jigs, finesse jigs, etc.. all have a reported purpose.
It is up to you on whether you utilize or believe in this, but I at least wanted to make you aware. Because for me, I would certainly not be using a Football style jig to flip into heavy cover. I would however utilize that style to speed drag across a sand bottom and up a bank or slope.
*Disclaimer: I had great success burning a 2kJigs Dock Monkey (flip and skip jig) with a Netbait Paca Chunk last year. In theory, this setup wasn't meant to burn back, and I attribute most of that success to the Paca Chunk action. But this goes to show that anything is possible. So in no way is there a perfect way. Practice to discover what you like, and what works for you and the areas you fish.