If you're sick of hearing the noisy THUNK-THUNK-THUNK of water dripping down your rain gutters, you can silence them with a bit of DIY work. The Family Handyman shares this useful tip that requires nothing more than some nylon and caulk.
Here’s a better way to solve the problem. Caulk around the gutter drain and install a length of nylon or poly rope (Figure A). The water will wick down the rope instead of free-falling and hitting the elbow.
It's actually the same sort of technique we've shared in the past to quiet a leaky tap with a string. Hit the link to read more.
Quieting Gutters and Downspouts [The Family Handyman]