I've done Reading Tri a couple of times - well organised, friendly, low key event - maybe 600 - 800 people. Two lap swim in a nice lake, then two lap, flatish fast bike course (mainly open roads) the four lap off road run around the lake. Normally excellent medal and a tech t-shirt ...... and a very friendly, handsome Pirate in charge of transition
Effing Madness - I would imagine under the strict interpretation of BTF rules (Rule 6.1 xiii to be precise) this would not be allowed as it could be seen as acting as a pacemaker. But I doubt anyone would really care.
But why would you want to, when you could be getting drunk with the rest of us!!!