(recd your pm but answered here)
I know folks who have found there is a weakness in that type you show where the bracket opens out due to the twisting force of the wheel... with the risk the wheel will come off so they wouldn't be my first choice.
Lots of folks have lots of different wheel types on different SIBs amd most seem to be happy with them but from my experience there are only two types I'd fit.
If you are happy to remove/fit at each launch/recover (as I am) I would use the Zodiac type...
http://www.ibsparts.co.uk/media/cata...b1/8/4/849.jpg
This is the lighter duty pair totally suited to your outfit... they also do a heavier duty set (ones I use) for larger outboards.
If ones that stay on and flip up would suit you better these are the type I'd buy... made by Trem and great quality with high strength.....
http://www.excel-inflatables.co.uk/b...d-position.jpg
You will notice both types I'd pick spread the load across two points on the transom for far better strength.