There is a mod to make splatoon compatible with a pro controller, but currently the creator has hidden the mod, idk why

Oh no,I really need this mod.If anyone knows how to download it,please let me know. T^T

Sadly not.... I tried with switch pro controller and ps4

You can use a pro controller with a wiimote tied with rubber bands, go to the dojo select a secondary controller and press b+zr+zl and this activate the controller, honestly is a weird form to play haha

I almost forgot, then you need press 2 on the wiimote and select your weapon and map

Ye, you can use wiimote pro controller combo if ya like. dunno if you need mods tho.

Thanks for all ideas.I'll go and give them a try.