Della Porta is an old but still very popular kite configuration widely used mostly for the attractive of a simple rectangular shape that offers good chances for decorations - panel graphics.
Della Porta kite has some basic negative points mainly linked to the upper triangle of sail.
A simple modification of original project solves most problems with a simple solution easy to make - SMAC
Functions of triangular sail parts in standard Della Porta :
• mid lower triangle : LIFT