I think all the aspects are helpful when you lool to boost your income, but honestly the best choices is to work with method and get the highest exposure on the web, having the right tools to manage the listings (new agencies like Booking All In or similar are growthing up quickly offering this service to private or professional property managers). If you get more booking you save time you can dedicate yourself to increase your income from additional services so, at the end, give the bookings to outsourcers could be a way to boost your turnover! What do you think about this possibility? Sabina Dunne