You can get two pairs of trunks if you like but it is a waste of money. Most of us who do shows know that the night show(90 sec. routine) is 99% for the audience. It almost never effects your score, espesially in amature competitions. Two sets of trunks are nice if you think you need them. If it is a concern of yours then just get them. The last thing you need to worry about is your trunks. You need to concentrate on controlling your self up there and hitting every pose exactly the way you practiced them, not thinking about your trunks. So what I'm saying is if getting more than one set of trunks will relax you than do it. Hell get a few and make the decision game time. What i used to do, is get about 2 weeks out when you are looking fantastic, and stand in front of the mirror and try on my trunks and see which ones looked the best. Then the night before the show I did it again after my pro tan dried. Then you will definately know what to do. If you are going to start doing shows and keep doiing them I would get a few pair. If you think this is going to be your first and last show, or if you think that you will be in a different weight class by your next show than I would just get one pair. The main thing to remember is if your diet was good and if you look lean and hard no one will notice your trunks. My trainer told me that you do not want to be defined by your trunks, meaning that if the judges are noticing your trunks than they are not noticing your body. Let your body stand out not your trunks. At my last show we had a free pose down and I know it was between me and one other guy, I rotated my body up as close to him as I could (Because we were side by side all night) and started hitting poses that would show his flaws. It was awesome!! He still beat me but I felt great and the crowd reaction was awesome. Getting second sucks when you know you should of had first, but that happens to all of us on here. I bet I could start a post on people getting robbed in shows. Good luck!! and do what you feel will make you the most confident and relaxed, it is you up there not anyone else.