We study the transport properties for a family of geometrically frustrated models on the triangular lattice with an interaction scale far exceeding the single-particle bandwidth. Starting from the interaction-only limit, which can be solved exactly, we analyze the transport and thermodynamic behavior as a function of filling and temperature at the leading nontrivial order in the single-particle hopping. Over a broad range of intermediate temperatures, we find evidence of a DC resistivity scaling linearly with temperature and with typical values far exceeding the quantum of resistance h/e2. At a sequence of commensurate fillings, the bad metallic regime eventually crosses over into interaction induced insulating phases in the limit of low temperatures. We discuss the relevance of our results to experiments in cold-atom and moiré heterostructure based platforms. © 2021 American Physical Society.