Thanks for the replies. I have a bunch of pool noodles. Looks like I just found a real use for them....

I just went out and tried a couple of noodles. They're about 2 feet long and 3 inches thick. I set the heli in the pool and it started to sink on the right side and the tail was in the water about 2 inches. The heli weighs more than I tend to think.
How big are the floats from Heliproz??? Length and width of each float and distance they are apart would be great.
I have some noodles that are 5 inches thick but I figured that would look stupid. Maybe that is what is necessary for correct floatation.