Christmas Icicle Lights

I installed gutter door because I have large oaks and continuously clean my gutters. I really want to put Christmas lights this year, but I do not want to remove my gutter is to install the lights. Other suggestions to hang icicle lights on the gutters without removing the gutter door? Thank you!

If there is a sort of gap between the lid and the stream, you can use "S" hooks. They come in different sizes.