So I'm new at smoking. So far I've made a batch of beef jerky which came out good and pork loin, which came out good. Today I decided to smoke a brisket. I could not find anything at the grocery stores so I went to the local italian meat market and all he had was a frozen brisket. So he cut it in half for me and I came home with a 7 pond frozen brisket. This was on Tuesday. I let it sit in the fridge till Wednesday and when I got home Wednesday from work I put it in a zip lock bag and put that bag in cold water and back in the fridge. Replaced water a few times. Today at 10am I took it out, put it on counter and got my smoker going. Around 10:30 I got the rub on and by 11 it was on the smoker (weber smokey mountain, with just a bit of water in the pan, a tea pot worth) I kept a temp of 220-230 pretty much up until around 6-7pm when it "stalled" around 145-150. So I took this time to put it in tin foil and added some apple juice. I closed it up and let it sit a few more hours. When it hit 180 I went back out, and removed the top layer of tin foil. It seemed to drop now down to about 170. So I got the smoker up to about 250-260. It didn't seem to help so I wrapped it back up in tin foil and the smoker went up to about 275. By 10:30 I had a temp of 195 so I removed the top tin foil and let it go another 30 minutes to try and get that bark. The temp started dropping to about 185 so I removed it. I wrapped it in fresh tinfoil, wrapped a towel around it and stuck it in a dry cooler for an hour. I went to cut it and this is what I got: NOT exactly a good looking/tasting brisket. It smells good but it did not taste good. It was very tough and as you can see, it's not how a brisket should look. Any idea what went wrong? Was it just a bad cut of meat (and frozen which did not help) ???