I've found a couple caches at this park over the last few years. It appears both have been archived. I will give it a go and see if I can make one that lasts. You shouldn't appear too conspicuous looking for this hide as you are not in sight of the playground, playfield, parking lot or trails. Hopefully this will keep it from getting muggled.
I wish I could say the container is my original idea. I got the idea for this type of hide from a cache I found down in Ashland, Oregon. I only took 2 GPS readings thirty minutes apart and the coordinates were both exactly the same. So I'm going with them. Log is Rite in the Rain paper and will be signable when wet.
Please rehide out of direct line of sight.