Yeah it can take some real ingenuity when you work alone and no help. I don't generally like LB's unless they are being used to go thru a wall and the panel is very close after that. Some times it helps to use adapters and upsize the LB to the next size.
Posted some pictures of my success could have been better but I have seen much worse.
With Electricity there is the right way to do it and the dead way. Just because it works does not make it safe.