On my Quicksilver 4.3 I had to go for the bolt on wheels, as she was just too heavy to launch alone with a Marnier 25. I did manage it once or twice but it was a hell of a job.
The wheels I went for detached after launch, leaving just a small bracket on the transom. They were also pneumatic, so could cope with sand etc.
There is another option - but I only have scant details.
In an old Boat Mart Magazine there was an advert for wheels that tied on to the boat. The roller type whees - available in different sizes, simply went under the stern, and a strap fastened around, which could then be detached. These looked excellent, and were around £60 when I enquired.
I am sure somone must keep their old Boat Mart mags - it was certainly within the last 12 months.
Sorry I can't be more specific.