I made a posting on Nextdoor.com, yesterday, looking for more people who might want to volunteer at Lake Hodges. Something in how I worded it drew a lot of responses from non-kayakers.
A lot of the fishing line and litter that we pick up is also accessible from the shore. Some of the worst problem areas are those most popular with bank fishermen who walk in. So beach walking is a very good way to help.
I am going to create a section on the website out how you can help on foot. It may take me a day or two (and longer to perfect) so in the mean time, please feel free to contact me for more information.