I was trying to remove my fins to put on a smaller set, but it's totally stuck due to the saltwater and steel fins. Is there a simple solution to make it easier, such as some kind of spray to loosen up the salt? Figured I'll give this a try before drilling through the screws, as I remember that particular dimension of screws was hard to find.
If they are stainless screws, WD40 & let it soak for a day then same again till it's workable
If they were steal it may work if they haven't rusted to much
Sellys EZY GLIDE - comes in a spray can. It worked well for a really salted zippper. It smells like WD-40, it is just more expensive - probably the same stuff ?
When it comes to undoing stubborn screws and bolts , I have discovered with years of experience that it helps to attempt to turn the screw not only in the direction required to loosen it but also in the direction to tighten it, only slightly though, you only want to "crack" the hold on the screw. Using brute force in the direction of loosening invariably results in the head of the screw being sheared off. May not sound effective to some but I can assure you , it does work. J
get an impact driver ( i think thats the name) one that u hit on the end with a hammer... i needed to get some boots off an old wakeboard and that worked
All of the above are worth a try.
Did you get new screws with smaller fins? (Stainless I hope)
Last thing you want to do is damage your board so it maybe be better (if possible ) to cut/break old fins to allow the screws to fall out.
Then think about a silcone spray (or similar) when reinstalling new screws, do not over tighten, and every now and then crack the screws so same won't happen again.
Think this is what Jack means, they do work, just support board very well.http://www.ehow.com/how_4809810_use-hand-impact-driver.html
