Strength/Weight/Cost

A chief benefit of wood strip construction method is a high strength to weight ratio. BUT a high strength to weight ratio or even high strength is not guaranteed. A high strength to weight ratio requires selecting a reasonable balance of materials and assembling them in a reasonable manner.

You can have only two of high strength, light weight, and low cost. Choosing low cost and settling for low strength and high weight is a poor choice.

A typical fiberglass kayak might have the following properties
 

 Layup   Weight (Hull & Deck)   Strength   Material Cost 
 (AH) 80oz glass
 - typical fiberglass hull & deck 
 46#  67  $308 

A typical wood strip kayak, in the sense that it is a common recommendation, might have these properties:
 

 Layup   Weight (Hull & Deck)   Strength   Material Cost 
 (F) 6.0oz /.250"/ 12.0oz
 (per other authors & builders)
 34#  40  $230 

Compared to the typical fiberglass kayak the typical wood strip kayak is simply cheap, and weak.

There are better wood strip material options
 

 Layup   Weight (Hull & Deck)   Strength   Material Cost 
 (I) Wood & Glass   28#  70  $320 
 (O) Wood & Kevlar & Glass   24#  68  $340 
 (R) Wood & Kevlar   21#  90  $1,420 

These three layups were chosen to be as strong as the typical fiberglass layup. Each is also lighter and stronger than the typical wood strip boat. The first can be bright finished inside and outside. The second bright finished outside. Either of these is reasonably priced. The third is very strong, but priced out of reach except for very demanding situations.

Compared to these layups the typical wood strip kayak is simply cheap, weak, and heavy.

Coamings, seats, bulkheads and other items should add less than 5#.

If you or your builder does not choose to use reasonable materials assembled in a reasonable manner, you do yourself a disservice.