I think you're pretty limited to fish in hand or lying next to rod pictures if you're by yourself (besides a variety of scenic or widlife pics you can take as well, been loving the rod/reel in foreground with wildflowers/river in the background shot lately, stolen from Trout Underground).

I've been thinking lately of bringing this weird little camera stand i have, that let's you attach it to a treebranch or something and getting it setup in advance for sure thing hotspots, and having it set on timer mode