BFlood said..
My uni has a strap as well as the rubber between the base and spike, I assumed this was for redundancy should the rubber give way. Is this the case or am I relying on hopes and dreams?
The spike broke out of the thread as the whole thread broke open and top part fell apart. Looked like a mix of metal fatigue and corrosion. The strap does nothing for you in that scenario.

And trying to get back in 25 knots and bay chop would surely puncture the board even if the strapping held things roughly in place.
Thanks guys, you've confirmed my thoughts. New gear being ordered tomorrow.