Is there a better option than "darts" to hold an upholstered panel tightly and still allow removal?

[spongejosh]

Velcro or magnets maybe? Assuming you don't have access to secure it from the underside.

If you do end up using the plastic clips look at the kind you can replace if they break. Since they will be upholstered over you won't be able to replace the push through ones after they're covered.

http://www.ebay.com/itm/10-Subaru-Do...-/400304574472

^ those work like a keymod rail. You cut a heyhole in the bottom of panel and slide the clips in from the bottom. Then if one breaks or stops holding as well after being removed you can just replace the clip.