Impact sprinklers are actually very easy to connect, so it shouldn’t take a lot of time to do so. You can definitely use more than one impact sprinkler in your garden to ensure every inch of your garden is sprayed. Each product will offer some information as to how far you should space out your impact sprinklers so that it doesn’t overlap. You’ll also want to ensure you’re not using too many impact sprinklers at the same time if your water pressure is already low (below 40 PSI). This is because your sprinklers will then not be very water-efficient if all of them are working from the same weak water supply.