I've read Speedy's article before about verticle, and read it again today. He talks about too hard of a front rest. I'm struggling with exactly what that means. I have two Protector bags for my front rest; one leather and the other cordura. One is stuffed full of sand and is quite hard. The other is loosely filled with sand, but when put on the rest feels just as hard as the other bag. Am I using the wrong kind of sand to fill my bags?