You can use Crow Enterprizes replacement quick release seat belt latch tethers for a nice super easy to see pull strap. The JAZ-908-03 Products quick release window net mount kit comes with a latch that's welded to a 29" long rod which can be cut to length. The kit can be used with most window nets that a feature a loop design such as Crow's line of window nets

Includes:
One quick release seat belt style latch
Two tabs that welds to chassis
One 29" x 3/8" rod