The front and rear beam are tied around with a through going line on the border of the net, just as you see on the front.

In the four corners of the tramp-surface there are RVS-eyes mounted on the beams which are the four basic strong attachments for the whole net. So the lacing only puts the net flat and gives the necessary tension for each hole of the net.

When mounted correctly, there is no difference in the tension and the awareness of "sacking" compared with a normal tramp.

The cat itself is completly designed and homemade by myself. The reason that you see a resemblance with your P18 is that the hulls are also asymmetric shaped just like all the prindles. To be honest I looked a lot to the prindle design; though I changed the volume-distribution.

With regard to the beams: for me it was the simplest and least weight costing method of fixing them permanently on the hulls.