Long time lurker, first time poster here just throwing my two cents in.
In regards to fishing at night in December, I don't think it's strange at all. I and a lot of people I know used to do it all the time, either because someone actually wanted to eat some fish, or because we had nothing better to do besides go drink out at the lake. Maybe this girl wanted to have a fish fry, maybe there was nothing else to do, who knows, but I don't think she's involved. I took her saying she can't believe she didn't see anything, simply to mean that she passed through there around the same time, or probably a little before Jessica. I haven't looked at maps, because to me, unless you're from an area, you don't really know what roads people usually take or why. One article even said she lives close to the scene, so it wouldn't be odd that she'd go down that road for whatever reason.
I take the "4:20" comment by another poster to be referencing pot, nothing more.
I don't believe any of these wild theories I've seen are what happened at all. I don't think she is actually in the witness protection program, I don't think her dad refused to smuggle drugs or some such, I don't think it was one gang trying to send a message to the other, and I don't think Muslim terrorists or whatever has been thrown about elsewhere had anything to do with this.
I also don't think their "gangs" are as big of a deal as some people think. I think they are small timers that may be big fish in their small pond, but if they went to say, Memphis or Chicago, they'd be low men on the totem pole. That is, if they were even allowed near the pole at all. I highly doubt anyone is actually getting gunned down in the streets there simply because they're reppin' the wrong set. While the people causing trouble may be in their own little cliques, the rifts between them aren't solely due to that, and people from both sides seem to mingle with each other. This is all just my opinion, and I could very well be wrong.
If the people that did this to Jessica are in some little gang, I don't think it's the motive. Right now, I'm leaning towards it being some kind of jealousy involving another woman. Maybe Jessica and her man were intimate at some point, maybe he just made it out as if they were, or maybe she just thought Jessica wanted him. I think she was set up to be confronted, and I also think her longtime across the street neighbor knows who was involved. I think quite a few people know, but just aren't saying.
Judging solely by his reaction during his interview, I think Mr. Mr was probably her dealer at some point. I don't think she and DRT were actually friends. Friendly with one another, maybe, but not really friends. For some reason, I don't think DRT was directly involved, but I don't know about Mr. I do think both of them know, or have a very good idea of who did it.
Obviously, I don't really have a clue, this is all just my opinion. (Also, I'm not sure if I can even post things referencing those two, sorry if that's not allowed.)