Got a stavr evro 2.2 awhile back, I think it arrived on the 14th or 15th day from when it was shipped. Ordered a Krepish shortly after, still waiting for that, wanted slightly smaller holes for sugar sand rock-free spots.
Sealing the fiberglass handle can be done several ways, makes it float real nice. On mine, for my stavr, I used 3/4" long cut-off pieces of solid fiberglass rod to make "plugs" which are marine-epoxied in both ends, the lower end also has a 10" reinforcement insert epoxied in place. Just make sure to plug the lower end above where the screw goes thru...
Most fiberglass handles on heavier duty rakes/hoes found in lowe's type stores vary in wall thickness and are usually 31 or 31.5mm outside diameter. The yellow fiberglass poles that electric and phone company folks use are exactly 32mm with much thicker wall diameters, "dickie" brand poles. I guess you could use just about anything to just form a "stopper" inside the tube, then fill with like an inch of marine epoxy to form a solid plug.
On the wood handles, I've had good luck using MANY coats of poly clear coat spray to keep the water out.