Shallow Sandbed or No Sandbed

[Chin_Lee]

Just curious why people are using Starboard and not other types of plastics IE: Sintra, ABS, PVC

I called PlasticWorks in Surrey and got quoted the following prices for the following types of plastics:
- white Sintra 4x8 sheet is $92 (didnt get thickness for the price quote but they come in 3mm to 6 mm and up)
- black ABS 1/8" is $55 for 4x8 sheet
- shite Starboard 1/2" is $163 for a half sheet (appro 4x8)
- gray PVC 1/8" is $34 for half sheet
- white Sanalite (similar to Starboard) us $150 for half sheet of 4x5

I'm thinking either the ABS or Sintra would work just as well. ABS is black but will get covered with coralline very quickly - it should provide impact protection at 1/4 inch. The sintra will float but if its weighed down by rocks, shouldn't be a problem - its also good for impact absorbtion since its relatively soft

Looking for thoughts/ideas..........