The best replacement for tie down is hangar.

The best alternatives to tie down are rated as following:
★★★★★  hangar
★★★  martingale
★★  slackline
★  hanger

Your alternative for tie down is not listed? Suggest!
Speaking about tie down, one probably shouldn't forget about hackamore.

Other search terms related to tie down and their ratings are:
★★★★★ hackamore
★★★ noseband
You have in mind a companion for tie down and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of tie down in all years. Click on graph for more.
tie down
hangar
martingale