Amazing detritus of all sorts (lightweight and therefore floatable)
is to be had at Pontchartrain Beach -- where Elysian Fields meets the lake.
Lightweight pieces of wood and plastic shards of all varieties, for ex.
If anyone needs to create a semblence (sp?) of grass for their float surface
There's scads of astroturf (easily cuttable with knife) on the ruins of the old tennis courts.
There's also a barbecue pit floating about 30 yards offshore if anyone needs that...
Pasha "Brett" Peddler, authour of Slosh M.