How to hide this URL or show my own website url?

Hi there. 

After clicking on Pay here (https://hamptonsboatrental.com/make-payment-here/). I redirect to https://form.jotform.com/80917053809158 this site. But my question is how to remain in my website address with that jotform? I want to avoid showing this jotform url. 

Help me to sort it out. Thanks in advance.

Well, you're redirecting users from your website to direct link of your form: https://form.jotform.com/80917053809158

If you want to keep the same workflow, you could use Custom domain option: https://www.jotform.com/help/144-How-to-use-Custom-Domains-with-Jotform

So you could use your own domain for your form.

Another way is to add one more page to your website, embed your form in that page, and then redirect users to that newly created page, that way the form URL will be the URL of the page you created.

Let us know if any of those could work for you.

Thank you!