How do you change a tire on a boat trailer with tires that have the bearing assembly in them?

I need to take the bearing nut and cotter pin out just to take the tire off. My spare doesn't have the bearing assembly in it. What do I do? Buy a new bearing assembly for the spare?How do you change a tire on a boat trailer with tires that have the bearing assembly in them?Take the whole assembly off and switch over to %26quot;Bearing Buddies%26quot; then use regular wheels and tires.How do you change a tire on a boat trailer with tires that have the bearing assembly in them?yes