Hi BB,

Some people (like me) prefer to have the trailing slash, others prefer not to. It's really a personal preference thing. The important part of this is that it is always the same either way. Either you only allow the page to load with the slash or without.

As for GoDaddy's dashboard I can't answer with complete confidence because I've never used GoDaddy. But if it can detect any attempt to load a page on your site and serve a redirect to the canonical version you establish, then yes, that would be fine.

On Blogger, if all of your page URIs end in a .html then this is not an issue for you at all. But if any of those pages end in a directory type reference, then you'll want to look for solutions to this.