Hi Val .. I think I`d go with Henry`s suggestion ..shave it all off... I had a good look at all your pics yesterday and while it seems a shame to remove the `middle`, it will inevitably continue to thin anyway..it`s just a question of at what rate [time-wise] ...partials would be `messier`to work with in your case...it would be easier to just work with the one topper.The pic of the styles you`d like to achieve are very do-able and should suit you nicely ..you`ll be able to get away with that nice [higher] density as your sides are good. I know you were asking about the crown area.. I`ll have a look at that again later on and come back to you on it... a certain amount of thinness/scalp show-through there is normal on most people and adds to the realism/overall `look` ... you might be wise to allow a certain amount of show -through there...... it can be tricky just at that point when making the template as to where to have the back perimeter ending due to the swirl/ change of hair direction there, but nothing that can`t be dealt -with ! Regards, Paul.