I think they help in certain situations. The wind needs to be right, like any other time when bow hunting. Many times it'll take the bulls into bow range, when they hold up outside of it. Visual can help a lot.
i've heard both ways good and bad about decoys. My buddy says he's had bulls come into his decoy and sniff it. but last year when we got ahead of the herd and set it up, the elk didn't like it and they booked it in the other direction. i personally dont like to hunt with a decoy because i think i would rather that the elk not know anything is there. i'd rather be fully invisible if that makes sense
We use our decoys in way to keep the bulls looking........we've had good luck with using them in/behind underbrush where only part of the decoy is visible. The Montana cow decoys work well as they are compact and lightweight. I too have had elk get spooked by them as well though........to each his own!
Here is a very handy and effective device I use to dispense corn with - but it could also be used to dispense any other seed or deer feed.
I had an old feeder that had a failed motor... I made a set of brackets to attach the feeder to the rear of the 4 wheeler - the lower one encircles the feeder and has a forward section with holes drilled in the outer ends of the bracket... these holes align with two 5/16" bolts that drilled into the rack of the 4 wheeler.
The upper bracket is an "L" shaped...