...I use a combo of things to do my annual hull cleaning at haul-out time on my Hobie 33



...one step is to treat the hull with Muriatic Acid from my pool chemicals.....costs about $2.00 to do 60+ feet of hull ( 33 ish * 2 sides)...



......anything organic will be dissolved,..and be gone on the rinse...



.....WEAR GLOVES, EYE PROTECTION and MASK!.......have runnng water hose available in case of getting some on skin,....stand UPWIND when treating hull (...fumes..)



...just be careful and you will be fine........or forget it if handleing the product makes you feel uneasy..





Bruce



St. Croix