Typical skills

-Infuse Health
-Any Self Healing Spell

Skills of choice

-Word of Healing, due to its spammability, low cost, and large heal, is an effective self-heal after an infuse, as well as being an effective general-purpose heal.
-Light of Deliverance was often used before its nerf, as it was energy efficient in topping off both your bar and any extra the infusee needs. In addition, LoD was highly effective against many pressure builds.
-Spell Breaker was popular in HA before Factions and Nightfall offered better skills. This protected the infuser or Ghostly Hero from spikes (depending on map type). Other elites are often better, but Spell Breaker still sees occasional use in three monk backlines in combination with Arcane Mimicry on another monk.
-Healer's Boon is popular, as it increases the amount Infuse heals for.

Tactics

-You are responsible for countering spikes and great health losses of your team mates. This requires you to be extra alert.
-Kite and be observant. Watch for casters raising their arms and warriors running towards an ally.
-Don't occupy yourself with casting too much. This will make sure you are ready when your infuse is needed.
-Watch your energy level; it wouldn't do well not to have enough energy for infuser and followups! Keep your 15/-1 set on hand.
-Remember: prevention is better than the cure and PvP matches are a team effort, so the whole team should try to prevent spikes by knocking down and blinding spikers, interrupting key spells and even focusing a counterspike while they are less aware.

Equipment

-It would be against the infuser's best interests to run any health-decreasing runes. An infuser may also wish to keep a shield up most of the time for extra defense.

Monk secondaries

-Warrior is a popular secondary for the tactics skill Balanced Stance (to prevent being knocked down before spikes) or other defensive skills such as Disciplined Stance, Soldier's Defense or Shield Bash.
-Assassin can be used for Dark Escape, Return and other self-preservative skills.
-Mesmer can be used to prevent becoming hexed with Hex Breaker or use Channeling for great energy pool in HA.
-Elementalist can be used for Glyph of Lesser Energy.

Infuse on non-monks

-Sometimes Infuse Health is run on other casters such as Elementalists, and/or Imbue Health on Dervishes if the monks can't accommodate the skill.



Information from wiki.guildwars.com