My thought at the moment is that this park/camp site has possibly been chosen for a reason, perhaps familiarity, that he/she likely is comfortable here and has spent much time before, moo.
Eta: no major epiphany, just sayin.
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FTR I think it would be interesting to take a look at the info/characteristics, etc of:
* the Tampa shooter (he shot his victims at close range, lived and worked closeby, had ties to the neighborhood)
*the NOCO shooter (at least the one in custody linked to one killing); a shotgun was used to kill WC, he also lived very close by. In this case there was an attempted killing/shooting on a motorcyclist just prior to killing WC. Of course there were numerous window shatterings and shots on vehicles prior, which could not be linked. 2 other victims were also killed, which could not be linked.
*first question is how old these two shooters are, going back to look.
Neighbors say home of suspect in 2015 homicide drew past police presence
*note WC's killer was already known to police.
*Parker was 35.
*ftr he was an absoluuuuute nuuuutjob, his SM was craaaazy, rambling, shizoposts.
Tampa killings suspect faces 4 counts of murder - CNN
*the Tampa shooter was 24.