How to choose a feed site…
There are many ways to pick a site, none are right or wrong, just some work better than others.
First thing to do is work out where there is activity, whether it be crop damage or trails in and out of thick bush.
The one thing that has been determined for a successful feed site is natural bush, if you can find an area with natural bush surrounding it to build your site in, it will have a better success rate than if you placed in an open field, create a sense of security for the pigs and they will come.
Also feed regularly to keep them coming back.