Any way to change how the lightning rod looks like when in off hand?

[plain crystal]

I have been trying to make it so you hold the lightning rod up in the off hand and make it strike you for some reason but I can't get it to work, i've tried changing the json and using blockbench but nothing seems to work

[hollow sandal]

do you mean you're trying to adjust the arm position while holding the item? if so that's not possible
if you just mean you want an item that has a different model in the main and offhand, you can do that with an items model definition that has a select model type with the display_context condition

[plain crystal]

Oh ok