Plain ones can be butterflied & grilled like a steak.
Are you wanting to cook it all in one piece ? we musta been typing at the same time... "I" butterfly it, rub it down with real butter. then make a mix of Apple butter/ 16oz jar, 1/4 cup Tabasco sauce , 1/4 tsp. minced garlic, 1/4 tsp. rosemary. mix well , load mix into center of the meat. fold up like a taco and tie together with twine. make sure outside of said taco have a good coat of butter, and wrap in foil. I've discovered 3 complete layers works best. crimp ends for a good seal and let the cooking begin. 375 - 425 degrees for about 5 hours, turning it a couple times. If you ruin it by pairing it with wine, it's on you!!
Mix to taste, plain "Allegro" marinade, garlic powder, onion powder, apple juice, and one full flavored beer in bowl. Inject liberally, saving the rest as a brush on. I use a coal/wood smoker, so you might need to adapt for this part. Cook with a mixture of apple (or any sweet/fruit wood, like cherry, peach, etc) and mesquite wood at about 250 -275 degrees until done. I try to go anywhere between about two and ten hours, depending on size and quantity, while liberally moisturizing with leftover liquid whenever I need to add wood. I occasionally finish/top with quartered and smoked apple or pineapple slices.
Best tip I can give, besides the thermometer, is to look for a piece with a good amount of fat and marbling and start the cooking process with the fat on the top. It helps keep the meat moist and also helps to spread the marinade or smoke flavor through the meat.
Coat in yellow mustard, season with whatever rub you like, wrap in foil, cook on indirect heat at about 375 for 1.75 hours or until internal temp is 160. If you want then unwrap and sear about 3 minutes a side.
I season with salt, pepper and a bit of soy sauce. Foil wrap at around 350 with an internal thermometer to 150 and rest for 10 min before cutting.
Guess I missed my invite.
FYI, there's a thread about the Puck Pressure Ovens on here. I routinely do pork tenderloins in mine at 450 w/pressure for 15-18 minutes or so and they come out AWESOME.
A regular oven would be a little longer, and I'd recommend a "broil + turn" method.
Grill is my favorite. High heat, 4-5 min per side.
Re: the Puck ovens, yep, I have read that thread with great interest, and might consider one in the future.
After the foil method worked so well for me, I don't know if I can bring myself to go back to straight grilling like you do...that's where I messed mine up so often.