I am sure this has been asked about 100 times in the past but here it goes. I was at my local dive shop and a couple of the instructors were diving sidemount. I was talking to them about it and they both had the same response to why they decided to make the switch back problems. This really interested me. I asked them about going into side mount and they both said well u should start with doubles first. I was wondering what the general opinion is on jumping into sidemount with no real experience in doubles. I have been diving for 13 years and over the last few years have been diving alot and decided to go the tech route which is to include cave. My question is there any harm in going sidemount without any real experience with doubles?