While trampolines can be great fun for the kids to have in the backyard, Insurance companies consider them to be an extreme risk. The injuries sustained from a trampoline can be far reaching and last a lifetime. Even if you supervise your children on the trampoline and make sure they use it properly, even if you have all the safety nets, trampolines can still cause very serious injuries.
Trampolines are also an attractive nuisance which means people are tempted to use them even if they do not have your permission. Some individuals may sue you when they become injured on your trampoline even if you did not give them permission to use it.
Check with your insurance company before you purchase a trampoline. Some insurance companies will not write a policy and include the trampoline and they will exclude this item from your policy. If your insurer allows the trampoline be sure you have enough liability limits to cover you in case an incident occurs.