Make a concentration check to "cast" defensively: DC 15 + double spell level.
The rogue's check modifier is "caster" (i.e., rogue; assuming the Minor or Major Magic rogue talent) level + casting ability score modifier (Int for the rogue talents).
The standard technique is to cast while 10' away, move using a 5' step, then deliver the touch.
The standard technique is to cast while out of range of attacks, move, then deliver the touch.What if I've done that the first round, then want to do it again? I can't cast then ready an action to touch.
Yeah it's limited. I usually play a Magus so I have other options. Of course the gloves still work even if you aren't holding a charge.
Another option is to use a touch spell that has multiple charges like Frostbite or Chill Touch. (If you are using Major Magic to get the SLA then Frostbite won't be an option.) That way you can go several rounds between castings.
There are spells that prevent AoOs, though they're not usually efficient. You'd probably be best off with the multitouch spells or just casting defensively. Items like Gloves of Elvenkind and Fortunate Charm can help make concentration checks.
The standard technique is to cast while out of range of attacks, move, then deliver the touch.What if I've done that the first round, then want to do it again? I can't cast then ready an action to touch.
Yes, but you'll have to cast defensively by succeeding at a concentration check. You don't have to ready an action to touch though, you can do it the same round. You can ready to touch if you want to, but don't have to.
Yes you can, and since they're simulating a spell, they do indeed have levelsDo you have a reference for that? Because I entirely don't believe that, nor have I ever played that way.
Usually, a spell-like ability works just like the spell of that name. A spell-like ability has no verbal, somatic, or material component, nor does it require a focus. The user activates it mentally. Armor never affects a spell-like ability's use, even if the ability resembles an arcane spell with a somatic component.
A spell-like ability has a casting time of 1 standard action unless noted otherwise in the ability or spell description. In all other ways, a spell-like ability functions just like a spell.
(Link)
Emphasis mine. I'm pretty sure it's this line that lets you cast them defensively - it acts as a regular spell. Spells can be cast defensively.
They make sure that all spell-like abilities have spell levels with a clause shortly after:
If a character class grants a spell-like ability that is not based on an actual spell, the ability's effective spell level is equal to the highest-level class spell the character can cast, and is cast at the class level the ability is granted.
Otherwise, it has the same spell level as the normal spell does - an aasimar with daylight casts it as a level 3 spell.
To add to Braingamers post...
It does get a little confusing, but like he said, yes, they do have levels. When the spell can be cast by more than 1 class (say bard, sorcerer, witch, and wizard), its as cast by a sorcerer. I can't remember what's next in line if its not a sorcerer spell though