In its report of 19 December 2006, the Estonian Parliamentary Commission recommended that the fate of the missing Estonians be investigated further. From their report, Chapter VII:
"3. Proceeding from the fact that several persons who allegedly survived the catastrophe of the ferry Estonia are still missing, and taking into account the fact that they might have important information concerning the ferry Estonia, propose to the Government of the Republic to continue the search for these persons. "
Or is the Estonian Parliamentary Commission also a bunch of conspiracy theorists by your reckoning? Have you considered that perhaps they might actually know better than you?
And the JAIC does indeed claim a strong wave caused the visor to drop off.