jhorton, sounds like your not maintaining your equipment. Which parts are corroding? Try cleaning your drag system with dish detergent, then use comet on your metal parts of the drag to make them ultra smooth, let dry for 1 day, re-install in the proper order. If not you will have a drag that is not smooth. I have picked up a few stingrays in the 50# range and when they take off you better have a good drag system....never failed me....smooooth
DMala, try the fireline (braid)....works great. I cant say anything for whiplash, never used it......good luck guys!