You are making me want some roast!
I make roast fairly reguarly and I hated them until recently. Here is the thing I found: it is critical for me to sear and salt the meat prior to placing it in the crockpot. Otherwise, I get dry meat and all the juice ends up outside the meat, and not inside.
So, get your pan (on the stove top) ripping hot with about 2 T of oil (somthing that can take the heat- not olive with its lower smoke point). Add your patted dry roast and stand back and watch it for 6-8 min. I know. It seems like forever. Go start your crockpot warming. While one side of the roast is down, salt and pepper the other side liberally (probably 2 tsp or so). When the bottom side is very nicely browned, flip it over and repeat salting. Peel and quarter and onion, place it in the crockpot. Throw in 2-3 cloves chopped garlic. Let them rest on the bottom. Meanwhile back on the stove, turn off the heat and transfer the roast on top of the onions. Do not nestle it down against the bottom. You are finishing by braising it in the liquid. It will be floating and bathing, not sinking and drowning.
I use a can/package of mushrooms, 2 c of decently cheap red wine, and maybe 2-3c of water to deglaze the searing pan. (I like to think of this as precleaning

) Dump them in and run a wooden spoon around the bottom of the pan to loosen all the seared bits of flavor (frond) from the pan. Dump over the roast and leave it for several hours. I add potatos and carrots about an hour before serving or sometimes, I cook them separately - the horror!
That is it. Cooking time seems to vary by the crock pot and size of the roast, but generally 4-5 hours is enough for me. It is tender, juicy, and rich. Oh, and I remove it to slice and thicken the braising liguid into gravy just by adding a cornstarch slurry (2 T starch to 3-4 T water, stir well and dump into the liquid, stirring to incorporate.)
Makes really good left over sandwhiches!!!
