I run the collapsable prawn traps as my boat is too small for 8 prawn traps..they work, I bought them on army navy sales and off craigslist.. I rinse them off every time, they are still all rusting, visibly worse after an overnight soak., the netting and rope seems to shrink and after 5 years are getting harder to open up, could be the rebar I have tie wrapped inside, if I use fish as bait, seals (I'm guessing) tend to rip them open, they are incredibly light and need weight....all that said I've brought home thousands of prawns with them over the years but if I didn't need collapsible traps I'd invest in something better..