I don't currently have a LinkedIn account, but am considering creating one as a way to feel out if it's time to move on to a new company. Since this would be a new account I imagine that if my employer can see that I've done so they'll rightly assume I may be looking at other jobs.

I'm not familiar with how LinkedIn works, but I imagine there are advantages to linking up to other people's profiles. I think the disadvantages are severe enough, however, that it's worth not doing so in this case. I also assume there are non-job-hunting reasons to make a LinkedIn account, but even if those are valid it will still create the suspicion that I'm looking, which I want to entirely avoid.

Given the above, how do I go about creating a LinkedIn profile in a way that no one at my current job will know?

I found this question about preventing HR from seeing a profile update, but I think the creation of a new account sends a different signal than simply updating a preexisting profile.