http://www.huntingnet.com/forum/tm.aspx?m=1386096&mpage=1&key=?
I use a tube style peep and love it. Yes I change it twice a year...once before the hunting season and one after it. It's not a big deal to change it, takes only a few seconds and your peep will always be where you want it when you want it. Use the silicone and you will be set.I go more into moredetail on the post linked above, give it a read.