I take it you are suggesting a twin hopper design also?
Quite right a boat of its size would have to hoppers. I guess this design will probalby in total carry 3 kilos of e.g pellets but that is a rough estimate.
What materials do you intend to construct the boat from?
I will start by using some cheep 5mm thick ply wood overlaying it with fibre glass. Probalbly. And to get the curve at the front and back i will use ply wood and fill the front with polystyrine sheet and sand it to the required shape then plaster it lightly then sand again and then coating it in fiber glass.
Have you any ball park figures of an approximate cost for your design yet?
Not quite I think in total it will cost around £150 but thats including transmitter and reciever which is where the money will go.
I assume it will be markedly cheaper than any shop bought or redeveloped commercially available boat.
Well I think if this design of boat was retailed with dual hopper and twin motor it would probably cost from £600 - £1000 so i would say it is quite cheaper than retail.
Hope this has answered your questions sufficiently