I have a relatively thick 9’ HP longboard that has plenty of nose rocker (5,5") and a narrow (13,5") tail. The tail rocker is 3,3". The board works rather well in all conditions, but starts really shining in strong waves and shoulderhigh+. In smaller waves I miss my McTavish Original’s accelerating tail rocker swoop that gave a “carving feel” and did not stall if i stepped on the fins to make really tight turns.
What I had in mind was sanding the bottom open from sidefins backwards and reshaping the bottom and rails to give it some more tail “kick”. The current rocker numbers are:
Half foot from tail 2,5"
Foot from tail 1,8"
1,5 foot from tail 1,3"
The tail is thick so it could be easily thinned at least 0,3" to get 3,6" tail rocker that has some McTavish style swoop behind the fins. Of course the tail volume would drop a little and in an optimal world I’d propably have the tail a bit wider and outline curvier as the rocker is increased.
At least my McTavish and Takayama Noah Ka Oi have more tail rocker and the tail rockers accelerate more towards the tail. Both boards ride well, small to 1,5 overhead.
What do you say? Where are the pitfalls and what did I forget? What to expect?