In the past we've just taken our o/b props to the nearest propeller
shop and had them press in a new bushing. It isn't something easily done at home... requires a big press and a special "funnel" to compress the rubber bushing as it is shoved into the hub.
Sometimes the prop cracks while pressing out the old bushing, so be warned!
Jim and Ann s/v Insatiable II lying Lake Macquarie, NSW, Oz