make dog icey poles, by freezing stock in 2L milk containers. Stab with a knife a once frozen and give your dog some cool pillow he can chew, sip and hold on his legs to cool the body.
Wet the dogs legs thoroughly. Especially where the veins meet the surface
Drape a blanket on floor, and soak it with water, let the dog lay on it to cool down.
use the paddle pools you have
provide plenty of shade and free access to water
play water games with them for exercise with hose pipe if no rivers etc nearby
spray the face with water to cool
on extreemly hot days, (its gets up to 46degrees where i am). I fill up buckets of water, for emergency cooling if the dog goes into heat exhaustion.
Exercise dawn and dusk only
leave them alone to sleep off the midday sun
Put ice cubes in a old pillow case
I have a wheelbarrow to carry my dog into water should it collapse, i know that sounds exteme, but had to drag a 8 stone rottie into water to save it from heat exhaustion 2 yrs ago, i nearly broke my back doing that.