Can I do a border run to Laos as an Australian citizen to extend my visa for Thailand?

An Australian citizen currently on a 30-day extension of a transit visa is inquiring about the possibility of doing a border run to Laos to gain an additional 30 days upon returning to Thailand. The individual has only 12 days remaining on their current visa and needs at least 15 days to transfer to an Education Visa. Comments suggest that while Australians can get 30 days upon entry, there may be a limitation of only two such entries per calendar year.