Yes, USPS will deliver a kayak. The process is pretty straightforward; you need to package the kayak properly and ship it via USPS. Kayaks are relatively large and bulky items, so you'll want to ensure that you're using a sturdy box and plenty of padding to protect the kayak during shipping. You'll also want to ensure the package since Kayaks can be expensive items. Once you have the kayak packaged up, you can take it to your local post office and ship it via UPS.