I can see this debate becoming a Did/Didn't kinda argument.
48 knots on a SR4 with a Yammie 50 is Guinness Book of Records material - the upper end reported for this rig (on here) is below 40kts, mid 30's being typical. There's not much SR4 left in the water at 35kts. I guess that explains some of the replies you've got/are going to get.
Like Guinness, an independent witness or a video is going to be needed to convince readers that this is the real deal.
Then, you'll be a kind of Searider God on here