Have you ever been paddleboarding? It's so relaxing!
I sure do! me and my buddies can paddlers can stroke for hours and we often have races is only, But its only for well-trained watermen.
When was the first paddleboard created?
Well traditionally it was called prone or kneeling paddleboarding, So it must have been around 16th last century by my knowledge. 
How large is a traditional paddleboard?
Well they are about the size of a canoe but usually no larger, But they can vary in size depending on how many people it accommodates. 
I've only used my 1-man paddleboard.  How many does the largest one hold?
Paddleboarding
Paddleboarding participants are propelled by a swimming motion using their arms while lying, kneeling, or standing on a paddleboard or surfboard in the ocean. This article refers to traditional prone or kneeling paddleboarding. A derivative of paddleboarding is stand up paddleboarding also called stand up paddle surfing. Paddleboarding is usually performed in the open ocean, with the participant paddling and surfing unbroken swells to cross between islands or journey from one coastal area to another. Champion paddlers can stroke for hours and a race is only a warm-up for
from Sunset to Waimea was drawing a few hundred competitors, many using surfboards due to lack of proper paddleboards on the Islands. As paddlers began ordering boards from the Mainland, local surfboard shapers like Dennis Pang (now one of Hawaii's largest paddleboard makers) moved quickly to fill the local niche. On both fronts, paddleboarding has been consistently gaining momentum and popularity.
In 1996 the sport of paddleboarding was making a comeback. Once the domain of only dedicated watermen and big wave riders in the 50's and 60's