Salmo's rant rang true and was snipped for brevity.

The common denominator for bouyancy or density in foam seems to be pounds
per cubic foot. Do you recall what your EVA weighs?

Do you recall the manufacturer and the product id? Are they on the web
today?

Y20 and 2# XPE from Specialty Foams www.irfoam.com for example are two
closed cell foams weighing 2 pcf. The Y80 weighs 8 pcf and the 4# XPE
weighs 4 pcf and these may be machinable and shaped but are heavier.

Balsa for example can weigh as low as 4 pcf but most is in the 7-12 pcf
range with heavy knot hole wood in the twenties.

Is your EVA foam machinable? Can it be sanded? Can it be cut or shaped by
a hot wire? What can it be painted with other than Prismacolor or similar
pens?

The white Y20 and off white XPE for example are soft, non-machinable, cannot
be easily bored to create dowells or cylinders easily formed via hot wire,
IMHO.

No doubt they float very high on the water but when I asked the sales lady
what type of adhesive to use to attach a hook, she glazed over. But she
quickly assured me they could injection-mold any shape with embedded hook -
if the order was big enough! I did not have enough money or guts to ask her
how big that order had to be! g A Special or new hook minimum order is
100,000. Yep no guts - no $ that's me.

But I am very interested in your response.

Good luck!
John