Do you find a pull along bag better or does it twist you too much? A rucksack on both shoulders? A shoulder bag on one? Or across your body ? Or a computer type held in one hand? What do people find works best? My computer bag for work is quite heavy and I have a lot of problems and pain in my hands and wrists, but anything over my shoulder causes pain quickly too. Please share your experiences and any type you've found that is best.