I do have a sign cant remember exactly what is says, something like, it is one that i picked up from tsc and it says any person involved in equine activities owner not responsible for any injuries or the death of people involved,fla. statue blah blah blah, I'm not sure exactly what it says but something in those terms.So I still need the form?
Yes, you still always want a signed form in addition to posting your state's equine liability statute. If the person is a minor, make sure the parents/legal guardian sign.
And remember...equine libaility statutes generally refer to/cover the inherent
risks associated with horses, not things that are considered negligance. If you are providing the tack and/or tacking up the horse, you can still be responsible if there is an injury due to worn, defective, or improperly adjusted tack. You generally also have a responsibility to understand the riding ability/experience of the person and properly match that with a horse, i.e. if you know the person is a beginner and you let them ride a green broke horse, you could be considered negligant. To this end, most liability forms that I've seen from stables require the person to specify their experience level, years riding, height/weight/etc..have any information that you would use to match a horse and rider in writing and signed. If the person is experienced, let them examine the tack and tack the horse. Additionally, require a helmet, or (again) have a helmet/no helmet statement on the signed form.
Finally, a lawyer once advised me that horse owners are very proud of their horses and always tend to say things like 'my horse would never buck/rear/etc.' and that these types of statements should be avoided, i.e. don't say anything that would imply future behavior based on the past.
The more you have in writing, the better, and always keep in mind that, if you are sued, just defending yourself can be expensive, even if you win.
I know that all sounds like 'overkill'. The 'good' side is that we let friends ride our mares all the time and have never had a problem.