Center (keel) stringer - PVC vs Wood/Coosa

[captsuperfly]

Noticed on a lot of builds, many folks who remove the center stringer (think it's made of fir) replace it with a half pipe of PVC, others might use wood again or foam like coosa.

Curious if anybody has feedback on these decisions after the fact? How has the PVC held up? (I think contender does the same thing).

Also found an old thread that involved a discussion with Mr. Potter on the reason for the stringer (it was support for roller trailers). But that thread seemed to mention that Seacraft switched to PVC at the factory?

any thoughts appreciated.

thanks!