When Steakhouses dry age their beef, they do so with whole muscles that have a thick coat of fat on the outside. The meat is kept at a constant temperature, 34 - 38 degrees, and a humidity level between 50 and 75%. As the meat ages, the fat gets dry, moldy, and rancid.
When it's done aging, they trim off the moldy exterior and slice the meat into steaks.
Because Venison is so very lean, it doesn't lend itself to that style of aging. By the time you trim away the spoiled meat, you aren't left with enough usable meat to make it worth your while.
The only way I've seen to dry age venison succesfully is hanging before skinning. If you live in a cool enough climate, you can do it in a barn, but you have to be careful about insects. If it's so cold that the meat freezes, you aren't aging it anymore. The ideal situation is a walk-in refrigerator dedicated to this purpose. The side benfit of dry aging this way is that you can gut the deer, hang it and go eat dinner without having to worry about going back out to finish your work. You can get to it next Sunday when you've got some time.
Wet aging works perfectly well too. Vaccum pack your meat and let it sit in the refrigerator. After 2 weeks, I put what I don't plan to eat over the next week in the freezer. When I thaw it out, I still have a week or two at least before it would go bad.
Forget the marinades, forget soaking your meat to "draw out the blood", forget about covering up the taste. If you age your venison, it's not gamey. If you think Venison is gamey, you either freeze it right away or you soak it in salt water and ice for a couple of days. You would never do that to your Beef, don't do it to your Venison.