Late flowering tropical winter strains?

Hi all. Has anyone grown in the tropics during winter? Most of the strains ive come across flower way to early but other strains go for longer giving better yield. What strains have you used and recomend?

Im around 18degrees south of the equator.

Thanks
River

while I havent grown in the tropics would expect there is several pure sativas with long flowering times that would work well there, would expect most all indicas and crosses to flower early, and the only way around it would be to veg indoors or in a greenhouse with additional lighting to extend the day a few hours until they reached a decent size then place outside or shutoff the lighting in the greenhouse to allow them to flower.