Bumpers and holes in noodles

[FRC1618]

We're scouring for pool noodles (even in South Carolina, they're hard to find this time of year), and we think we've found a source:

http://poolcenter.com/pooltoys_noodles_water_logs.htm

Figure 8-1 in R08 mentions something about center holes and 3/4", but it's cut off. The aforementioned noodles have a 1/2" hole, though the part of the diagram we can see says that hollow pool noodles are preferred

In short, can we use pool noodles with 1/2" holes in them provided they meet the 2.5" requirement?

[GDC]

Yes.

[FRC2250]

We have been able to find pool noodles that do not have holes in them and need to know if we can use them or not?

[GDC]

Although pool noodles with a hole in the center is the preferred material for bumper construction, solid pool noodles are acceptable.