In 1934 the original boathouse was no longer serviceable, so a new one was purchased for a cost of fl.2290.00 ($1431.00). It contained the same set-up with a full workshop for repairs.

The Duno was always equipped with the best engine. As soon as technology invented a more powerful machine, Bernard would get one for his boat. In 1935 he installed an American made “Lycoming”, model UE 65 hp marine engine. Cost: fl. 1481.00 ($925.00)

In 1936 the Duno was professionally refinished using Valspar varnish and bottom paint. The cost was fl.95.00 ($59.00)

In 1953 Bernard came to the conclusion that the propeller was not driving the boat as fast as he would like. So he changed from a 14” to a 16” diameter propeller. Although this seemed a simple upgrade, it did involve some modifications to the drive shaft, and the location of the propeller.

At some time between WW I and WWII, Bernard wondered whether the 30’ length of the boat could be hindering its potential for speed. So he cut off about 3 –4 ‘ feet from the back.