As an ex-fisherman (coarse fishing, not sea fishing) I can vouch for it being a risky sport. The introduction of carbon-fibre rods and roach-poles made a difference - extremely good at conducting electricity from overhead powerlines near the riverbanks. Many a fisherman has sadly died or been seriously injured in this manner.
I'm not sure if statistically it is the most risky, one has to remember that fishing is the UK's biggest participation sport, whereas flying is (probably) one of the smallest in pure numerical terms. Where flying sits on the 'league table' of dangerous sports (on a percentage or 'incidents per thousand hours' basis) would be interesting to know - anyone care to shed any light?
By the way Mark, yes it is expensive. Welcome to the (poverty) club....