this is the jumbo tracer 4 configuration (4 boards bolted)

[woodman12]

I am going to trace out a large set of plans for a 18 foot canoe, sides and bottom
and show the different selections on 2018 jumbo trace software using the jumbo 4
configuration
this is an amazing configuration of 4 boards tied together
YouTube (https://youtu.be/cEdn2X3fDg0) jumbo4