Sensient's sample jug of SensiPro Pond Colorant arrived and eased away my application concern. The product is the consistency of sugar and pours easily from the wide mouthed gallon container. Quicker, easier and cheaper.
Overall the granules are less messy and faster to pour than glugging liquid dye out of a small mouth jug. It takes 8 gallons of liquid dye for one of our lakes. We pour the dye then rinse the jugs a number of times before putting them back in the boat. 3 granular jugs vs 8 liquid jugs - less chance of spilling dye into boat.
After an hour, the dye is dispersing out nicely, I think we just cut our dye budget by 25%.
One application tip - besides pouring downwind and moving at fast idle - pour granules out to the side of the swim platform. When poured directly behind the boat the dye will eddy back up on the platform. Same thing occurs with liquid dye but I always forget that until midway through the first jug.