Dual hitch adapter.. De-rating when extending hitch.

Could you per chance modify the hitch to work better for what you want? Like instead of 1 hole, have 3? Use the 2 outside to haul the bike, higher than hitch would hold it. Be much more stable than holding 300 pounds on 1 point with the extra lever to get above tongue.
Then instead of using a extended ball mount, extend the tongue of trailer.