Boatload rhymes with:
carload, caseload, download, overload, payload, planeload, shipload, truckload, workload, anode, borrowed, carload, caseload, cathode, copycode, crossroad, diode, download, eckenrode, elbowed, episode, inroad, microcode, mustachioed, nematode, overload, patnode, payload, planeload, radioed, railroad, rexroad, richaud, shipload, tiptoed, torpedoed, truckload, unitrode, winnowed, workload
Boatload sounds like:
badolato, batholith, battled, befuddled, bottled