Hello
I want to make a rigid buoy for spearfishing which I would like to have the lowest possible resistance and be able to carry a weight of up to 12 kg of which 8 will be a lead weight that will hang under the buoy.
I thought that the most effective form that the buoy could have would be a miniature sailboat with an 8 kg bulb that has such displacement that I can load another 4 kg in the hull. I would also like the length not to exceed 1.4 meters.
I would like to ask you if anyone can suggest me a hull design with the lowest possible resistance who at 1.4 meters can lift 12 kg (excluding the weight of the hull). From the designs I found available I really liked the VO 70 but I do not know if at 1.4 meters it can carry this weight.
Have you considered using an RC-fishing boat design? Like the ones below, without all the gadgetry.
https://imgaz3.staticbg.com/thumb/large/oaupload/banggood/images/B7/E0/25eb3dea-bb6f-43c4-b1c3-63b3a5cd46bf.jpg.webp
https://imgaz2.staticbg.com/thumb/large/oaupload/ser1/banggood/images/52/42/ea1ccfbe-6268-4d92-a958-f20c32499989.jpg.webp
Or the remote control lifeguard?
These designs seem interesting. But I would prefer the hull of a sailboat because I am looking for something with the least possible resistance.