What do you folks use for flotation devices on your ATVs for the Madison lakes?

Bought a 570 sportsman and am looking now for an early solution

j Wheels for ATV

Several run the https://nebulusflotation.com/

$599

D&S sell flotation bags that look like a large cargo bag, $299.99 set

12" x 20' Perforated Plain End Dual-Wall Culvert sold @ Menards, $145.00 cut and fill with foam, makes at least 2 set with 20'. 

See link for photos https://danesheriff.com/Divisions/Field-Services/marine-trail-ice