Feel my pain - my dog has to have the stupid cone on for 24 hrs a day for 4-6 weeks (cataracts op) - I swear its actually making her depressed now and we are only on day 13 or so.After a double TPLO my dog had to wear this collar for 3 weeks, night and day. I looked at and bought a soft collar but it really didn't work with her, so back to the hard cone. Being crated also didn't help as she was bashing into the sides even though I had got a crate far larger than she needed.
The original cone I cut about 1 inch off the length so she could eat her food easier HOWEVER she twisted round trying to clean her wounds ( she couldn't reach) but the edges of the cone rubbed the wound so much she got an infection. SO back to another full length cone, no ifs and buts. This time the cone rubbed a raw patch lower down her leg ( not the wound again than goodness) but it took all the skin off and left a very nasty raw patch.
She has been without the cone for 1 week now - absolute bliss
I had to do it by the book this time as after a previous op I allowed her to be without the collar and in about 2 minutes flat she had ruined all her stitches and had to be re done. I think it depends on the dog, some will leave it alone and others will keep trying to find a way whatever obstacle is in their way. It only takes a matter of seconds for them to ruin the stitches and to prolong the recovery