Don't quote me on this, but I believe the act of waving one's hands (or any object) overhead counts as a daytime distress signal. Also, a good flare kit will include daytime distress signals. A call from a VHF on my "must have" list will also usually summon help.
And an all chain anchor line is a big no no.
***By the way, all the line lengths and diameters are specific to a 19' powerboat.