I wrote some old posts about intstalling relfective decklines, not only for better visibility at night but to better facilitate rescues whether grouped, paired or solo. You need more than that beautiful varnished deck to hold on to.
As for paddling at night generally, lots of related graphics including pointers on how to make securite calls on VHF ch. 16 a night., not too much text.
Includes what boat light patterns mean, including the dreaded simultaneous green and red patter that indicates you're in danger of getting run down.
It's all at paddlingtravelers.blogspot.com
includes nearly a dozen VHF-radio related posts that have embedded audio files that let you listen in on VHF calls recorded by the Coast Guard.