I've yet to have trouble with wolf spam as I can just get out of his range and spam him with my own projectile (thundershock), but for an ike.... Hm...
Shield -> full jump -> second jump -> aerial? Should reach the wolf as long as you aren't *too* far away, especially with ike's range. Of course, if you're too far away for that to work getting out of range by going the other direction wouldn't be that hard, anyway. If you need to approach a wolf like this that's just spamming the blaster but you're out of range.... eh... You could try to dash -> jump as late as possible -> airdodge through blaster shots -> second jump -> aerial. The dash momentum should be enough to carry you through to the wolf, who will have incredible amount of lag from the blaster. Good luck, and hopefully this helps you (or anyone else having trouble with wolf who lacks a projectile, since this should be pretty universal).