single counter rotation.

[Dinikin]

If for example there was a good deal on counter rotation motor, what problems would it cause if installed on the boat.

[stevo]

I'm no expert, but the prop has to turn one way or the other, so I tihkn there shouldn't be any. Use the little fin under the anti-ventialtion plate to conteract the prop torque, just in your case it would be turned opposite of most other outboards.

[fishkisser]

None ....

[Boat Doc']

I agree, be aware you are limited to stainless propellers and their cost.

[namu mac]

Also your transducer would be mounted on the other side of the motor from a RH motor.

[Road Rage]

There may be some increased cost of parts and props...

In terms of performance you'd notice no difference.