I did okay while moving my bikes. I don't have 20 complete bikes though. The one thing I did wrong was somehow let something rub on a front rack, which nearly wore through it. I don't think I used blankets though. I think taking the front wheels off might just offer more things to scratch other things with. But I agree with the comment above that said to take off the pedals. They are the main thing that sticks out and will scratch other things. Handlebars are more protected.