I had friends who claimed the only way they ever successfully did it was to get a large plastic rubbish bin, put the shampoo in the water and froth it up , then get the cat inside the bin with the lid on for a few minutes - this took about 27 pairs of adult hands as the cat sprouted a multitude of legs - then remove the lid, standing well back with a well aimed hose...

My 2 little moggies; the black one just stood there and quietly accepted it - she loved ANYTHING I did to groom her - the white one would struggle a bit - but after I learned to keep a collar on and had something to hang on to, she tolerated it with a look of disgust in her eyes....

Both, though, did not protest, when in the height of Summer 30 + deg C weather (we can reach 40 Deg C in Brisbane) I would soak their coats in cold water and put them in a breeze - they would lick dry, so they got water too...