I paper fins if I feel like it. I have a Red Max with papered fins that I did in the 1970's. Paper is still attached to the fins. The papering seems to have lasted over 40-years.

Add Paper Skins To Balsa Wood Fins To Make A Stronger Model Rocket

Tissuing glider wings.... papering balsa fins... these are ancient techniques for adding strength to balsa structures.

I wouldn't pay too much heed to these curmudgeons on this board. They are so "you are either with us, or against us" given to such STRONG opinions and absolutes. Chill out guys...

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-Wolfram v. Kiparski
NAR 28643 - TRA 15520
MTMA Section #606 President