Whisk all the marinade ingredients together in a medium sized mixing bowl.
Place the venison steaks in a sealable plastic bag, and pour the marinade over top of the steaks. Remove as much air as possible and seal the bag, massaging the marinade to coat all the steaks. Allow the steaks to marinate in the refrigerator for at least 30 minutes, but 2-3 hours if possible.
Light your grill and set up for direct high heat cooking.
Remove the steaks from the marinade and pat dry with a paper towel. Get them as dry as possible. Discard any remaining marinade.
Place the steaks on the grill over direct heat, grilling for a total of 6 minutes; flipping every 30 seconds. At the same time, place the lemon halves over direct heat, cut side down. Pull the lemons and steaks off of the grill when the internal temperature of the steak is 115°F as indicated with a reliable quick read meat thermometer.
Remove the steaks from the grill. Top with optional blue cheese, tent with foil and allow them to rest for five minutes. Then slice, season with a pinch of kosher salt, and drizzle with a touch of optional charred lemon juice and serving hot.