i found an amazing picture, you can't see a lot but, it has been in the time i was making the heaphy track i had bigg bleasters and had to walk on them (nice feeling... its like walking on the sand whit no shoos and NO SKIN) i had to pick them to get the liquid out, i used the neadel from my SWISS KNIFE and then some electrical tape
sometimes you just make the best with a bad situation... no other alternative
that has been a real nice time i'll never forget those days