how far from where you think the deer will be, IMOP comes down to where the RIGHT tree is I can get in and out of without getting busted or seen
I personally think if your waiting to stand after the deer came into some what range, you wasted your best chance to get up
the farther out they are, the better you can prepair, and that inclused standing up, or turning or???
trying to stand when deer are close is a lot harder due to they have excellent hearing and eye sight, they can pick up small movements and sounds you might not think your making
and the more you move the better they an pinpoint where the sounds are coming from, thus leading to them looking up at you!
being farther off a trail or spot they will be in helps
but then it makes for a longer shot maybe?
don't forget, too close is as bad as too far many times due to shot angle!
IF I was getting busted, I would try standing in prime hrs, say last hr of day light, first hr of day time
they have always been prime times for me!
next I would suggest trying to wear and use quietier gear, I was always extremely picky on what I would wear and take into the woods
something I think many folks over look at times
as I know when I walk thru cabela's I see a ton of gear I feel is LOUD, and would never wear, and some of it is top shelf stuff too!
high price doesn't mean always quiet in my book!
next if you can afford it, get a walker game ear, and listen to what noise your making
and try to get what you can quietier
be suprised what some cloth tape can do to deaden sound in spots, from on the treestand, to zippers to snaps to bow parts and so on!

I am a firm believer in adding cover to my stands
on climbers it can be done, just more creativity is needed
I used to add pine tree branches to the platform, with some zip ties
adds cover scent and cover
IF allowed, screw in steps and bow holders too can be used to add branches to a tree, to help break up your form
if you have a seat climber with a rail, can ad camo material, to help hide feet movement

and last, IF I get busted in a tree
I stay out of that tree awhile
no point in aking the deer smarter to you hunting them, MOVE
wait a few days, if when you go back, you get busted again??
find a new tree
when ever possible
I try to set up with the sun behind me too
so IF a deer looks up, they have the sun in there eye's
15 yrds is about as close to a spot I expect deer to be in, for a stand placement for me
and I also try to place stands set up for being a right hander as I am, meaning I want deer to come out on my left!, over my right when possible
learning shoot sitting down is also a good idea!, to help cut down on movement?
but limits shots a lot more than standing does!