For once I can be thankful that I have a head the shape of Herman Munster and consequently have no problem with rippling.
The only time it happened was with a French Lace base from CoolPiece.
It was just too stiff.
It took me ages to realise it was the base's fault and not the adhesive's.
Since then I'll only ever buy the Swiss Lace.

Stretching it out may work in the short term, but ultimately it will make things worse.
I've read you can put in pleats at the side and this also helps to keep the front flat to the scalp.

I searched this site for 'PLEATS FRONT' and got this:
http://forum.toplace.com/showthread.php?...eats+front