I have recently moved my "A" Frame off the stern of the boat and placed it forward above the centre console.
As Alan quite rightly points out the frame is usually in the wrong place due to weight issues, and this is correct.
Having gone for a quick spin after doing the work, I managed a few more knots and the handling improved considerably at speed.
I thought it was going to be a big job, but with a bit of help it is possible to move it at little cost.
When I can afford a digi camera I will post photos of before and after....