Sailing at the point a cple of yrs back,,,,the first cple of metres from the beach was fairly thick with weed ,,,, decided to sail thru the weed as far towards the beach as i could,,,,,fin hit the sand so I stepped of my board ( ankle deep water/weed ) and stepped straight on a cobbler,,,, instant reaction I jumped but stepped straight back onto it...
Yep,,,twice in the one foot. Had to leave my gear on the beach as by the time I walked to the car park I could barely walk.. Hospital injected around both stings what felt like 100 times ( realisticaly more like 10 or so ) and by the next arvo I was right to sail again....But by f--k it hurt!!!!

Now always shuffle,,even if the weed is that thick you can barely move your legs