I don't know if it was you on the other board I replied to or not but here is my suggestion.
Blenderize the bluberry puree with maybe 1 cup of water or so. Subtract the water from what you plan on adding to the mead. Then take the mix and run through a screen. put pulp with a little more water, not much and pectin enzyme it in the blender, freeze, thaw, blenderize again, run through screen twice. Take the resulting juice and add to your must worry free. Best option is to put the juice in the secondary. This way no floaty bits and you don't need to introduce extra enzyme to your mead. Just the juice/pulp itself. You also would be suprised as to how much you get out of the juice. I did this with both blueberries and pears and it turns out great. You can even use the pulp to make tasty muffins if you wish. Or dehydrate and turn to dust and add a teaspoon to future mead batches as your nutrient source and flavor kick.
Works great and less mess in carboy, easier to run the blender through the dish washer than a carboy.