Thats how i cook all my steaks. Season them like half what you normally would and put in a gallon zip lock. Fill a tub with hot sink water like 110 range and put the bag in and push down to get the air out. I usually put a clip on the bag on the sid eof the container to stop it from moving much and just change the water out with fresh hot water a couple times. I usually let them go 45mins to an hour depending on thickness. After you take them out hit them with the other half of the seasoning you normally would have used. Its basically like people used to say leaves steaks out to get to room temp bit this gets them the same temp throughout and then less grill time to dry them out. Im doing a tri tip later I will post pics of the hot tub its really simple.