Getting tyres onto a Stans Crest rim

Is there a easy way / technique to getting tyres onto Stans Crests rims? I've really struggled to get both High Rollers and Bonty mud x on. I've had to use hot soapy water and brut force, but I won't be able to do this out on the trails.

The tyres I have are wired. Would folding tyres be easy to get on?