I recently experienced a failure on a rather expensive piece of sport equipment upon its first use. I purchased the product in the UK and experienced the failure in the UK, 2 weeks after purchase. I believe failure occurred because I had been supplied with the wrong fasteners.
Due to the nature of the product (a surfboard hydrofoil) it promptly sunk to the bottom of the ocean. Chance of recovery is slim to none. I contacted the retailer immediately to inform them of the failure and did not receive a very optimistic response - they asked me to try and find it at low tide. I went hunting but the water is just too deep and murky.
I have supplied the retailer with photos of the damage, a GPS trace for the time of the incident and a video of the failure occurring. Given that there is very little of the product left, is it reasonable to expect the retailer/manufacturer to respect my right to a replacement? If they resist, what can I do about it?