(b)least expensive > "Feather Flex"/a-sexual,2-sided,light-weight,compact,use elastic-corded between 2 bushes/trees(easy)
c)most bulky > "Mel Dutton"/original on market,most durable,single stake
I've owned the Feather Flex for 4 years; easy to use, material has been durable, can be used as bull OR cow (it's designed headless)>>> last year we hunted public land and called in a 370 bull to 27 yards while using it...
Note: Cabela's sells all 3 in their archery catalog ... I might give most consideration to the Montana decoy now.
<<<NOTE TO ALL EARLY SEASON ELK HUNTERS!>>>
Log on to www.pse-archery.com and click on "Ralph Ramos" for some REALLY good stuff on close-in tactics (improved tag-team tactics with diff. cow calling, *shows Mel Dutton decoy in use). Cathunt: this has good info for hunting with a decoy!
For my money, it's definitely worth having in your bag of tricks! Combine it with some seductive cow calling and you'll increase your odds for filling your tag. In fact, if I'm not mistaken, Dan also had success using a decoy a season ago here in Arizona.
The decoys we're talking about weigh next to nothing. If you were hunting by yourself, yeah, it'd be trickier to put together a set-up; it'd be better with two guys (one a caller). But I've seen the results --- they ARE effective!