Strawberry Hanging Planters in Rain Gutters

I've seen images of rain gutters being used for strawberry planters, particularly in more industrialized environments. And I've been wanting to do something along those lines for over a decade.  However, the impetus to actually create some hanging strawberry planters came from the unintentional over-watering of our yard, and the resulting wave of slugs that infested our strawberry crop last year. So this year, to start the strawberries over, I've constructed some hanging planters.

I bought some shelf brackets and 8' of plastic gutter. after a few weeks, I bought some chain, eye bolts, washers, lock-nuts, and some all-thread. I drilled some drainage holes in gutters, and setup the brackets. I then made the chain hangars and cut the all-thread rod to the right width. Leveling out the gutters, I then put a layer of sand, and then covered the remainder with potting soil. I'm planning on doing a 1/4" soaker tube to make sure they get watered.