Joining joists to bearers at 45degree angle - at same level where no joist hanger can work

I have a deck that I am replacing - The joists meet the bearers at the same level, and there are currently multigrips holding the joists to the bearers on just one side. I cannot see if nails are also back embedded from the bearer to the joist until I remove the deck covering however I guess yes. Regardless I would like to be at standards (code) on what is there, and not simply repeat what is there. I am trying to price this up and I am stumped on the best way to fix the joists in place as they meet the bearers at 45deg. If it was a 90deg join I would support them with joist hangers and nail through the back of the bearer, because of the angle I cannot use joist hangers, and I cannot put multigrips on BOTH sides of the joist as fixing the closed 45deg angle makes it nearly impossible to hammer in the fixings.

The options I can think of are that I could screw the closed angle side some of the way, but fixing at the top of the multigrip would be impossible. I was also thinking I could pass 2x long gal bolts through the bearer and then through the joist at the opposite 45deg as the joist is on, and bring them together that way and nail the back of the bearer. Wondering what is best standards/code practice here?

Any help appreciated.