they are expensive but very good quality product, we have one of their trailers and they are built to last.
http://www.logic-atv.co.uk/en/equestrian/g/br120_%7C_150_ballast_rollers.htm
giles
a standard 40x20 arena given normal conditions and access will take no more than 4 weeks from breaking ground to having your first ride. thats what we work to but other factors can speed them up slow them down etc so if access is ok and the site level ish we allow 4 weeks.
Giles
ok few things, i do this for a living and no people dont have a lot of money etc but a proper solution will last you a lot longer than a diy or make shift one
sharp sand is quite acidic don't know if you have noticed issues with your horses feet and has a very high compaction factor. its used...
in all the manéges we build we get planing permission and would advice not to skimp on drainage and the porus drianage layer beneth your sand and rubber surface. otherwise you will end up with pooling of water, a heavy surface and frozen in winter. unless your very lucky and live on free...