A burst blister is a different animal to a blister rubbed raw, which is what the OP appears to have. I should add I agree with Mel and tonyk to air the blister if that is possible, my reply assumed the OP wanted to continue walking.
By blister "rubbed raw" I presume you mean that the epidermal layer of skin (the top of the blister bubble) has been rubbed off? Then this is exactly where Hydrocolloidal dressings come into play, to replace the all important protective "bubble", by sealing the wound against ingress of dirt, bacteria etc whilst protecting the raw skin underneath and allowing it time to heal. The only reason why brand names don't suggest using on blisters that have burst but still have the skin intact is because people very rarely follow the instructions and decide to pull the patch off before it has done it's job and thereby ripping the skin off in the process.
Putting a non-adherent dressing on (as suggested earlier), will exacerbate the problem, you aren't removing the friction that caused the blister in the first place, merely adding another level of friction causing material into the equation.
Methods of and products for treatment have advanced considerably over the past couple of years, I know what has worked for me in the past and I know what has failed (and should the occasion arise again what my course of action will be), and as such it was my personal experiences that led me to my recommendation for treatment of the OP's problem. He's free to make up his own mind as the course of action/treatment to take, will be interesting to hear which and what the outcome is.
TonyK - pressure sores and blisters are two entirely different things, a pressure sore is as it says, caused by pressure, breaking down tissue leading to an ulceration of the skin, a blister is caused by friction, more akin to a burn, remedial treatments for both are different which is why you won't have heard of using hydrocolloidal patches in the treatment of extreme pressure sores.