What are the key differences between SUP boarding and packrafting techniques?

I’m Angela, an avid paddler with a background in kayak fishing and SUP boarding. I’m looking to expand my horizons and dive into the world of packrafting. The idea of combining hiking and paddling in remote areas has really caught my attention, and I’d love to hear from experienced packrafters about making this transition.
As someone used to the stability of a SUP and the storage capacity of a fishing kayak, I’m curious about the learning curve for packraft handling. How different is the paddling technique? Are there any specific skills I should focus on developing?
I’d love to hear about some beginner-friendly routes or areas where I can test the waters (pun intended) of packrafting. Any suggestions for trips that combine gentle rapids with good fishing spots would be amazing!