I have never been able to find one that will just suspend and I think the reason would be that water of different temperatures has different densities therefore the baits will float differently. The difference is very small but enough that baits will really never be completely neutral. What I do is attach some lead tape to the shanks of the treble hooks (mostly the front one) of my xraps. This has been an easy and cheap way to acheive what you are wanting. I hope this helps