The Zap cat is a twin hull boat and also quite a small one and the GRP sponsons (hard bit) are fairly narrow, probably no more than 50 cms wide, they are also quite pointed. The tube (hard bit) which sits on them is quite sharply upturned at the front ( There has to be a better description than Sharply upturned). The hard bit is only about 15 cms away from the tip of the soft bit.
I think the soft bit got compressed and the Hard bit did the rest.
Sorry about the Brackets, I must be developing a Hart condition