I've found what works for me is letting the meat soak in the marinade for 18-24 hrs as long as it's not one the accelerates the break down of the meat tissue as say pineapple juice, vinegar or wine...then your time in the soak is much less. Sweet and savory marinades do well longer, I soak my Tri-tip whole for 24hrs in a savory worcestershire sauce base having garlic and onion powder and other herbs, I find it at a local meat shop. It's kind of like brining a turkey, the process is long but the result is what your looking for. Chicken wings and thighs do well in a good soak of Buffalo or Peri Peri or Teriyaki for that matter. Some may not prefer it that way, experimenting with duration may be one's choice, you've got to find your comfortable niche. I do like those McCormick quick packages for chicken on the grill, best to follow the directions here or try a Product called It's Incredible by Heaven Made Products, an alternative to salt and pepper for some things. I really should be better at writing things down, I've probably forgotten more than I can remember but if the time and effort of preparing countless cooks have taught me anything I believe it would be just having a understanding of what goes with what. As far as methods are concerned...I stick to what works and evolve from there, like most folks.