did two gutters yesterday morning that were frozen solid, I set the vac up and then cable tied my hose around the swan neck leaving the end of the hose about 4inches shorter from the end of the gutter vac nozzle, cranked the heat right up and then started the gutters, it really worked a treat, took a little longer and had to empty the excess water the vac was picking up but I made good money, thought I would share it with you, hope it helps in the weather to come.
graham