I glued the bridge on this morning and was nervous about doing it the same way as always.  I use string and wedges, no caul and no clamps.  I think I have posted pictures of it here before.  This is one glue joint that suffers from being clamped for too long, the pressure deforms the top slightly and must be allowed to spring back before too long.  90 minutes works for me.  Of course the more flexible the top is, the more it will deform.  In this case the guitar has the most flexible top I have ever built so I was worried about deformations and also I wanted to make the most of the bridge as a reinforcement.  In my quest to make this guitar sound better with gut strings I had not only made it more flexible but also I had used a shallower dome on it.  Obviously, the last thing I wanted to do was push the already shallow dome flatter with the glueing pressure.  I considered using clamps but my reservations about that method are even greater when it comes to a thin top so I decided against that.  As you can see from the photo the doming was preserved quite well by using a very soft prop inside the guitar which added just enough resistance so that the “give” in the top felt like it usually does on my guitars.  Sorry about the quality.  The last shot shows the top and you can see the silking indicating the vertical grain.