heavy weight doesnot affect the overall ability to handle wind. platform, surface area, vertical surface area & power loading affect the models flying quality.lighter models may get upset a bit more but they recover faster as well. Ive had very small models ( obviously lighter ) handle wind very well due to high power loadings. many of the pattern planes handle wind well. Sig Kougar is IMHO one of the best wind planes out there.Ive flown in Hurricaine force winds (Hurricane Ellana 1985)