What I found strange regarding public comments I have seen so far, is the many that tell people not to search private property, and making reference to certain fields, farmland and outbuildings, saying they are on private land. If areas like that are going to be ignored (I guess until the police get round to looking), then had he been trapped or injured somewhere like that, he'd have had no chance, if people are advised not to look there.
Surely a missing and vulnerable young man is more important than 'trespassing' on someone's privately-owned field or overgrown extended garden (by this I mean some people in Jersey own areas of land near their houses, which are not actually gardens or fields, just areas of land left to nature). The comments just said to say off private land, and didn't make reference to anyone else actually checking them, or telling people to get permission to search. Just to keep away. I found that a bit worrying.
I noticed comments from a couple of residents very close to where his belongings had been found, saying that they had checked their sheds and gardens, but were surprised not to have had a visit from the police asking them to do so - or asking if they had done this.