Built by peter randall – the total including engine, trailer and everything to get it going was about $17,000 australian. i’ve been quoted around $35,000.00 by boat builders. peter randall – lemontree passge, australia. built by alex neymark – $44,000 includes motor & trailer, everything! only top of the line materials were used including many custom made parts.. How fast does it go? for estimating the speed for small outboard planing boats see planing speed boat chart. this chart should be used for general estimates. In the 1970s, phil bolger began a long and successful collaboration with harold ‘dynamite’ payson with bolger designing the boats and payson building them as well as selling plans and writing books about how to do it. ‘dynamite’ called the first series of easy-to-build plywood boats "instant boats"..