Thrust board vs no thrust board

[Projectile]

Can anybody comment on handling and flexing, or advantages/disadvantages of SIB design with and without a glued in thrust board?

The Zodiac WB series (which are actually AVONS), don't seem to have thrust boards, while the Zodiac HD series (and FC series, I believe), seem to have thrust boards. Wondering if either design is better and why ...

[m chappelow]

Think as well as acting as a "thrust" board for the engine torque to push against for boats that don't have the floor go right up into the bow
the "glued in " thrust board also gives a boat with the old type multi lightweight plywood floors and inflatable keel something solid for the upward forces at the "bow deadrise " when going over waves & help to stop the boat tubes from parting outwards .

it also gave boats that had the steering wheel option as an add on something solid for the wheel to be fixed to .

[RIBFIXER]

The thust board can also be used for locating eye bolts for davit lifting purposes.