I bought gutter guards at Home Depot a couple of years ago. I think the come in 1 ft. sections. They go under the bottom layer of your shingles and clip onto the out edge of the cutter. If I remember, it was $1-3 per section.

They only thing I don't like about them is the "whirly-bird" maple leaf seed heads always seem to find the guard holes. smile

Stone
_________________________
"If you can dodge a wrench, you can dodge a ball."