argh we are in the same boat just now, each nappy change is an absolute battle of wills (and strength, trying to pin elijah down while he screams or disappears at the slightest opportunity). we did try doing it on the floor as off the ground was getting too dangerous but it just made it easier for him to escape!
just now we are doing quite well with this (risky) approach: i put some favourite toys on the couch and stand elijah up facing it, he is so pleased to be a)stood up and b)playing with something (sometimes the remote or my phone if he is particularly frisky
) that he will stand just long enough for me to change him - if i need to check he is clean/put cream on/sort the nappy out i still have to pin him to the floor but i'm getting very quick!
we have also had to abandon cotton wool and use wipes for now much to my dissatisfaction! i don't like them but they are quicker than spraying with water and wiping